Effectiveness of mass dengue vaccination with CYD-TDV (Dengvaxia®) in the state of Paraná, Brazil: integrating case-cohort and case-control designs.

Background: CYD-TDV (Dengvaxia®) was the first dengue vaccine approved, launched in Brazil in 2015 for individuals aged 9-44 years. We aimed to estimate the effectiveness of CYD-TDV in preventing symptomatic dengue cases during a campaign targeting individuals aged 15-27 years in selected municipalities in Paraná, Brazil. Additionally, we examined whether a history of dengue, as recorded by the surveillance system, modified the vaccine's effectiveness. Methods: We conducted a case-cohort analysis comparing the frequency of vaccination, with at least one dose of CYD-TDV, in individuals with dengue confirmed by RT-PCR, identified by the surveillance system during 2019 and 2020, with the vaccination coverage in the target population. Moreover, in a case-control design using weighted controls, we assessed the documented history of dengue as a modifier of the vaccine's effectiveness. We used a logistic random-effects regression model, with data clustered in municipalities and incorporating covariates such as the incidence of dengue before the campaign, age, and sex. We calculated vaccine effectiveness (VE) as (1-relative risk) x 100%. Findings: 1869 dengue cases were identified, which had a vaccination frequency significantly lower than the overall vaccination coverage in the target population (50.3% vs. 57.2%, respectively; overall VE: 21.3%; 95% confidence interval [CI]: 13.4%-28.4%). In individuals with a documented history of dengue, vaccination had a VE of 71% (95% CI: 58%-80%) in reducing the incidence of dengue. However, vaccination was not associated with a significant reduction in the overall dengue case risk in individuals without a documented history of dengue (VE: 12%; 95% CI: -21% to 36%). In this last stratum, vaccination was associated with reduced cases due to DENV-1 and DENV-4, but an excess of DENV-2 cases. Interpretation: Vaccination led to a significant reduction in reported dengue cases within the target population. The case-control design suggested that this reduction was primarily driven by the benefits observed in individuals with a documented history of dengue. In endemic regions with limited serological testing facilities, a previous history of dengue diagnosis recorded by epidemiological surveillance could be used to triage candidates for CYD-TDV vaccination. Funding: Research supported by Sanofi.

National Vaccine Coverage Survey 2020: methods and operational aspects.

OBJECTIVE: The national vaccination coverage survey on full vaccination at 12 and 24 months of age was carried out to investigate drops in coverage as of 2016. METHODS: A sample of 37,836 live births from the 2017 or 2018 cohorts living in capital cities, the Federal District, and 12 inner cities with 100 thousand inhabitants were followed for the first 24 months through vaccine record cards. Census tracts stratified according to socioeconomic levels had the same number of children included in each stratum. Coverage for each vaccine, full vaccination at 12 and 24 months and number of doses administered, valid and timely, were calculated. Family, maternal and child factors associated with coverage were surveyed. The reasons for not vaccinating analyzed were: medical contraindications, access difficulties, problems with the program, and vaccine hesitancy. RESULTS: Preliminary results showed that less than 1% of children were not vaccinated, full coverage was less than 75% at all capitals and the Federal District, vaccines requiring more than one dose progressively lost coverage, and there were inequalities among socioeconomic strata, favorable to the highest level in some cities and to the lowest in others. CONCLUSION: There was an actual reduction in full vaccination in all capitals and the Federal District for children born in 2017 and 2018, showing a deteriorating implementation of the National Immunization Program from 2017 to 2019. The survey did not measure the impacts of the COVID-19 pandemic, which may have further reduced vaccination coverage.

Associated factors with recurrent wheezing in infants: is there difference between the sexes?

Abstract Objective: Identify associated factors for recurrent wheezing (RW) in male and female infants. Methods: Cross-sectional multicentric study using the standardized questionnaire from the Estudio Internacional sobre Sibilancias en Lactantes (EISL). The questionnaire was applied to parents of 9345 infants aged 12-15 months at the time of immunization/routine visits. Results: One thousand two hundred and sixty-one (13.5%) males and nine hundred sixty-three (10.3%) females have had RW (≥3 episodes), respectively (p10 colds episodes (OR = 3.46; IC 95% 2.35-5.07), air pollution (OR = 1.33; IC 95% 1.12-1.59), molds at home (OR = 1.23; IC 95% 1.03-1.47), Afro-descendants (OR = 1.42; IC 95% 1.20-1.69), bronchopneumonia (OR = 1.41; IC; 1.11-1.78), severe episodes of wheezing in the first year (OR = 1.56; IC 95% 1.29-1.89), treatment with bronchodilators (OR = 1.60; IC 95% 1.22-2,1) and treatment with oral corticosteroids (OR = 1,23; IC 95% 0.99-1,52). Associated factors for RW for females were passive smoking (OR = 1.24; IC 95% 1.01-1,51), parents diagnosed with asthma (OR = 1.32; IC 95% 1,08-1,62), parents with allergic rhinitis (OR = 1.26; IC 95% 1.04-1.53), daycare attendance (OR = 1.48; IC 95% 1.17-1,88), colds in the first 6 months of life (OR = 2.19; IC 95% 1.69-2.82), personal diagnosis of asthma (OR = 1.84; IC 95% 1.39-2.44), emergency room visits (OR = 1.78; IC 95% 1.44-2.21), nighttime symptoms (OR = 2.89; IC 95% 2.34-3.53) and updated immunization (OR = 0.62; IC 95% 0.41-0.96). Conclusion: There are differences in associated factors for RW between genders. Identification of these differences could be useful to the approach and management of RW between boys and girls.

Associated factors with recurrent wheezing in infants: is there difference between the sexes?

OBJECTIVE: Identify associated factors for recurrent wheezing (RW) in male and female infants. METHODS: Cross-sectional multicentric study using the standardized questionnaire from the Estudio Internacional sobre Sibilancias en Lactantes (EISL). The questionnaire was applied to parents of 9345 infants aged 12-15 months at the time of immunization/routine visits. RESULTS: One thousand two hundred and sixty-one (13.5%) males and nine hundred sixty-three (10.3%) females have had RW (≥3 episodes), respectively (p10 colds episodes (OR = 3.46; IC 95% 2.35-5.07), air pollution (OR = 1.33; IC 95% 1.12-1.59), molds at home (OR = 1.23; IC 95% 1.03-1.47), Afro-descendants (OR = 1.42; IC 95% 1.20-1.69), bronchopneumonia (OR = 1.41; IC; 1.11-1.78), severe episodes of wheezing in the first year (OR = 1.56; IC 95% 1.29-1.89), treatment with bronchodilators (OR = 1.60; IC 95% 1.22-2,1) and treatment with oral corticosteroids (OR = 1,23; IC 95% 0.99-1,52). Associated factors for RW for females were passive smoking (OR = 1.24; IC 95% 1.01-1,51), parents diagnosed with asthma (OR = 1.32; IC 95% 1,08-1,62), parents with allergic rhinitis (OR = 1.26; IC 95% 1.04-1.53), daycare attendance (OR = 1.48; IC 95% 1.17-1,88), colds in the first 6 months of life (OR = 2.19; IC 95% 1.69-2.82), personal diagnosis of asthma (OR = 1.84; IC 95% 1.39-2.44), emergency room visits (OR = 1.78; IC 95% 1.44-2.21), nighttime symptoms (OR = 2.89; IC 95% 2.34-3.53) and updated immunization (OR = 0.62; IC 95% 0.41-0.96). CONCLUSION: There are differences in associated factors for RW between genders. Identification of these differences could be useful to the approach and management of RW between boys and girls.

Impact of Tdap vaccine during pregnancy on the incidence of pertussis in children under one year in Brazil - A time series analysis.

Pertussis is a globally distributed infectious disease that is a significant cause of morbidity and mortality, especially in infants who are too young to be immunized. This disease is common in childhood, and when it occurs during the first few months of life, it leads to hospitalization and, sometimes, death. Brazil has adopted the strategy of maternal immunization against pertussis in late 2014. This study aims to analyze public data on the disease to determine whether there was an impact on the disease burden following the introduction of the vaccine Tdap in pregnant women and its magnitude. We performed a time-series analysis of the incidence of pertussis between October 2010 and January 2019. We stratified the population of interest into three groups: infants aged less than two months old, infants aged two to six months, and infants aged six months to one year, according to Brazil's vaccination schedule. We found a protective effect of maternal vaccination in all age groups, more prominent on the first group. Before the intervention, infants under two months had a higher risk of getting pertussis in comparison with infants two to six months old (HR 1.15, CI 95%: 1.11-1.19). After the intervention, age under two months is a protective factor compared with two to six months (HR 0.90, CI 95%: 0.82-0.98). The pertussis incidence reduced in all age groups and all Brazil's Regions.

Vaccination coverage and adherence to a dengue vaccination program in the state of Paraná, Brazil.

The success of vaccination programs depends on the level of acceptance of the vaccine to achieve high vaccine coverage rates (VCR). Vaccine hesitancy is a challenge, especially concerning new vaccines. Dengue vaccine, Dengvaxia®, was licensed in Brazil in 2015 and implemented, in a pioneering publicly-funded initiative in the state of Paraná, between 2016 and 2018. The vaccination program took place in five phases in the 30 municipalities most affected by dengue in the state, targeting individuals from nine to 44 years-old in two cities and from 15 to 27 years-old in the other 28 municipalities, totaling a target population of 500,000 individuals. A cross-sectional descriptive study was carried out to assess VCR and adherence to the dengue vaccine in this program. VCR, dropout ratio (DR), and compliance with the vaccination schedule (CVS) were analyzed by sex, age group, and municipality size. A total of 302,603 individuals (60.5%) received ≥ 1 dose, 44.2% received ≥ 2 doses, and 28.6% 3 doses. The DR was 52.8%. Among individuals who started vaccination, 40.6% achieved CVS. The highest VCR, highest CVS, and lowest DR occurred in the age group from 9 to 14 years old and from 28 to 44 years old and in smaller municipalities. A greater proportion of men started vaccination (male 64.0%; female 57.1%) however, the DR was higher in men (male 55.4%; female 49.9%), and a higher percentage of women completed the vaccination schedule according to the recommendations (CVS male 37.8%; female 43.6%). Differences were noted in the CVS according to the initial phase of the program (first phase 50.8%; second phase 18.8%). The heterogeneity in vaccine uptake and compliance according to sex, age, and municipality size suggests the need for differentiated strategies to address challenges with new and multiple-dose vaccines.

Quality of data on causes of death in southern Brazil: the importance of garbage causes. / Qualidade dos dados de causas de morte no Sul do Brasil: a importância das causas garbage.

INTRODUCTION: The study objective was to analyze the quality of data on causes of death in southern Brazil. METHODS: Mortality Information System (SIM - Sistema de Informações sobre Mortalidade) data were used to evaluate the occurrence of Garbage Causes (GC) in death certificates (DCs) of residents of South states and their capitals between 2015 and 2016. The GC of each state were compared to the other states and grouped by severity level (N1 to N4, according to decreasing potential impact on mortality profile). We evaluated the N1 and N2 GC in the 0-74 years, in accordance with local of occurrence and attesting professional. RESULTS: The occurrence of GC ranged from 29 to 31% among the three states, below the national average (34%). The GC of levels N1 and N2 were similar between states and heterogeneous between capitals. Most deaths were in-hospital, between 55%-64% of N1 and N2 GC occurred in the states and 39%-55% in the capitals. As for home deaths, this number ranged between 25%-31% and 25%-40%, respectively. More than 30% of the attesting professionals (except in Florianópolis) were declared as "others" in the corresponding DC field. Physicians from the Forensic Medical Institute (IML) and Death Verification Service (SVO) attested 15 to 24% of N1 and N2 GC in the states and 33 to 66% in the state capitals. CONCLUSION: The improvement of mortality data should involve strategies aimed at hospital physicians, in accordance with the volume of deaths and the IML and SVO services in addition to support for the emission of home DC, due to the importance in generating more severe GC.

INTRODUÇÃO: O objetivo do estudo foi analisar a qualidade dos dados sobre causas de morte na região Sul do Brasil. MÉTODOS: Foi utilizado o Sistema de Informação sobre Mortalidade para avaliar a ocorrência de causas garbage (CG) nas declarações de óbito (DO) de residentes nos estados e capitais da região Sul entre 2015 e 2016. As CG foram comparadas com os demais estados e agrupadas por nível de gravidade (N1 a N4, segundo potencial decrescente de impacto sobre o perfil de mortalidade). Foram avaliados os CG de N1 e N2 na faixa etária de 0 a 74 anos, segundo local de ocorrência e médico atestante. RESULTADOS: A ocorrência de CG geral variou de 29% a 31% entre os três estados, abaixo da média nacional (34%). As CG N1 e N2 foram semelhantes nos estados e heterogêneas nas capitais. A maioria dos óbitos foram hospitalares, onde ocorreram 55% a 64% das CG N1 e N2 nos estados e 39% a 55% nas capitais. Nos óbitos domiciliares, esta proporção variou de 25% a 31% e de 25% a 40%, respectivamente. Mais de 30% dos médicos atestantes (exceto em Florianópolis) não identificaram seu vínculo com o paciente, declarando-se como "outros" no campo correspondente da DO. Médicos de Instituto Médico Legal (IML) e Serviço de Verificação de Óbitos (SVO) atestaram 15% a 24% das CG N1 e N2 nos estados e 33% a 66% nas capitais. CONCLUSÃO: A qualificação dos dados de mortalidade deve envolver estratégias voltadas aos médicos de hospitais, pelo volume de óbitos e para os serviços de IML e SVO, e suporte para emissão das DO domiciliares, pela importância na geração de CG de maior gravidade.

Qualidade dos dados de causas de morte no Sul do Brasil: a importância das causas garbage / Quality of data on causes of death in southern Brazil: the importance of garbage causes

Resumo Introdução: O objetivo do estudo foi analisar a qualidade dos dados sobre causas de morte na região Sul do Brasil. Métodos: Foi utilizado o Sistema de Informação sobre Mortalidade para avaliar a ocorrência de causas garbage (CG) nas declarações de óbito (DO) de residentes nos estados e capitais da região Sul entre 2015 e 2016. As CG foram comparadas com os demais estados e agrupadas por nível de gravidade (N1 a N4, segundo potencial decrescente de impacto sobre o perfil de mortalidade). Foram avaliados os CG de N1 e N2 na faixa etária de 0 a 74 anos, segundo local de ocorrência e médico atestante. Resultados: A ocorrência de CG geral variou de 29% a 31% entre os três estados, abaixo da média nacional (34%). As CG N1 e N2 foram semelhantes nos estados e heterogêneas nas capitais. A maioria dos óbitos foram hospitalares, onde ocorreram 55% a 64% das CG N1 e N2 nos estados e 39% a 55% nas capitais. Nos óbitos domiciliares, esta proporção variou de 25% a 31% e de 25% a 40%, respectivamente. Mais de 30% dos médicos atestantes (exceto em Florianópolis) não identificaram seu vínculo com o paciente, declarando-se como "outros" no campo correspondente da DO. Médicos de Instituto Médico Legal (IML) e Serviço de Verificação de Óbitos (SVO) atestaram 15% a 24% das CG N1 e N2 nos estados e 33% a 66% nas capitais. Conclusão: A qualificação dos dados de mortalidade deve envolver estratégias voltadas aos médicos de hospitais, pelo volume de óbitos e para os serviços de IML e SVO, e suporte para emissão das DO domiciliares, pela importância na geração de CG de maior gravidade.

ABSTRACT Introduction: The study objective was to analyze the quality of data on causes of death in southern Brazil. Methods: Mortality Information System (SIM - Sistema de Informações sobre Mortalidade) data were used to evaluate the occurrence of Garbage Causes (GC) in death certificates (DCs) of residents of South states and their capitals between 2015 and 2016. The GC of each state were compared to the other states and grouped by severity level (N1 to N4, according to decreasing potential impact on mortality profile). We evaluated the N1 and N2 GC in the 0-74 years, in accordance with local of occurrence and attesting professional. Results: The occurrence of GC ranged from 29 to 31% among the three states, below the national average (34%). The GC of levels N1 and N2 were similar between states and heterogeneous between capitals. Most deaths were in-hospital, between 55%-64% of N1 and N2 GC occurred in the states and 39%-55% in the capitals. As for home deaths, this number ranged between 25%-31% and 25%-40%, respectively. More than 30% of the attesting professionals (except in Florianópolis) were declared as "others" in the corresponding DC field. Physicians from the Forensic Medical Institute (IML) and Death Verification Service (SVO) attested 15 to 24% of N1 and N2 GC in the states and 33 to 66% in the state capitals. Conclusion: The improvement of mortality data should involve strategies aimed at hospital physicians, in accordance with the volume of deaths and the IML and SVO services in addition to support for the emission of home DC, due to the importance in generating more severe GC.

Estimation of HIV incidence in two Brazilian municipalities, 2013.

OBJECTIVE: To estimate HIV incidence in two Brazilian municipalities, Recife and Curitiba, in the year of 2013. METHODS: The method for estimating incidence was based on primary information, resulting from the Lag-Avidity laboratory test for detection of recent HIV infections, applied in a sample of the cases diagnosed in the two cities in 2013. For the estimation of the HIV incidence for the total population of the cities, the recent infections detected in the research were annualized and weighted by the inverse of the probability of HIV testing in 2013 among the infected and not diagnosed cases. After estimating HIV incidence for the total population, the incidence rates were estimated by sex, age group, and exposure category. RESULTS: In Recife, 902 individuals aged 13 years and older were diagnosed with HIV infection. From these, 528 were included in the study, and the estimated proportion of recent infections was 13.1%. In Curitiba, 1,013 people aged 13 years and older were diagnosed, 497 participated in the study, and the proportion of recent infections was 10.5%. In Recife, the estimated incidence rate was 53.1/100,000 inhabitants of 13 years and older, while in Curitiba, it was 41.1/100,000, with male-to-female ratio of 3.5 and 2.4, respectively. We observed high rates of HIV incidence among men who have sex with men, of 1.47% in Recife and 0.92% in Curitiba. CONCLUSIONS: The results obtained in the two cities showed that the group of men who have sex with men are disproportionately subject to a greater risk of new infections, and indicate that strategies to control the spread of the epidemic in this population subgroup are essential and urgent. OBJETIVO: Estimar a incidência de HIV em dois municípios brasileiros, Recife e Curitiba, no ano de 2013. MÉTODOS: O método de estimação da incidência foi baseado em informações primárias, resultantes do ensaio laboratorial Lag-Avidity para detecção de infecções recentes do HIV, aplicado em uma amostra dos casos diagnosticados nas duas cidades em 2013. Para a estimação da incidência de HIV para a população total das cidades, as infecções recentes detectadas na pesquisa foram anualizadas e ponderadas pelo inverso da probabilidade de teste de HIV no ano de 2013 entre os casos infectados e não diagnosticados. Após a estimação da incidência de HIV para a população total, foram estimadas as taxas de incidência por sexo, faixa de idade e categoria de exposição. RESULTADOS: Em Recife, foram diagnosticados 902 indivíduos de 13 anos e mais com infecção de HIV. Desses, 528 foram incluídos no estudo, e a proporção estimada de infecções recentes foi de 13,1%. Em Curitiba, foram diagnosticadas 1.013 pessoas de 13 anos e mais, 497 participaram do estudo, e a proporção de infecções recentes foi de 10,5%. Em Recife, a taxa de incidência estimada foi de 53,1 por 100 mil habitantes de 13 anos e mais, enquanto em Curitiba, de 41,1 por 100 mil, com razão do sexo masculino para o feminino de 3,5 e 2,4, respectivamente. Foram evidenciadas elevadas taxas de incidência de HIV entre homens que fazem sexo com homens, de 1,47% em Recife e 0,92% em Curitiba. CONCLUSÕES: Os resultados obtidos nas duas cidades mostraram que o grupo dos homens que fazem sexo com homens está desproporcionalmente sujeito ao maior risco de novas infecções, e indicam que estratégias para controle da disseminação da epidemia nesse subgrupo populacional são essenciais e urgentes.

Estimation of HIV incidence in two Brazilian municipalities, 2013 / Estimação da incidência de HIV em dois municípios brasileiros, 2013

ABSTRACT OBJECTIVE To estimate HIV incidence in two Brazilian municipalities, Recife and Curitiba, in the year of 2013. METHODS The method for estimating incidence was based on primary information, resulting from the Lag-Avidity laboratory test for detection of recent HIV infections, applied in a sample of the cases diagnosed in the two cities in 2013. For the estimation of the HIV incidence for the total population of the cities, the recent infections detected in the research were annualized and weighted by the inverse of the probability of HIV testing in 2013 among the infected and not diagnosed cases. After estimating HIV incidence for the total population, the incidence rates were estimated by sex, age group, and exposure category. RESULTS In Recife, 902 individuals aged 13 years and older were diagnosed with HIV infection. From these, 528 were included in the study, and the estimated proportion of recent infections was 13.1%. In Curitiba, 1,013 people aged 13 years and older were diagnosed, 497 participated in the study, and the proportion of recent infections was 10.5%. In Recife, the estimated incidence rate was 53.1/100,000 inhabitants of 13 years and older, while in Curitiba, it was 41.1/100,000, with male-to-female ratio of 3.5 and 2.4, respectively. We observed high rates of HIV incidence among men who have sex with men, of 1.47% in Recife and 0.92% in Curitiba. CONCLUSIONS The results obtained in the two cities showed that the group of men who have sex with men are disproportionately subject to a greater risk of new infections, and indicate that strategies to control the spread of the epidemic in this population subgroup are essential and urgent.

RESUMO OBJETIVO Estimar a incidência de HIV em dois municípios brasileiros, Recife e Curitiba, no ano de 2013. MÉTODOS O método de estimação da incidência foi baseado em informações primárias, resultantes do ensaio laboratorial Lag-Avidity para detecção de infecções recentes do HIV, aplicado em uma amostra dos casos diagnosticados nas duas cidades em 2013. Para a estimação da incidência de HIV para a população total das cidades, as infecções recentes detectadas na pesquisa foram anualizadas e ponderadas pelo inverso da probabilidade de teste de HIV no ano de 2013 entre os casos infectados e não diagnosticados. Após a estimação da incidência de HIV para a população total, foram estimadas as taxas de incidência por sexo, faixa de idade e categoria de exposição. RESULTADOS Em Recife, foram diagnosticados 902 indivíduos de 13 anos e mais com infecção de HIV. Desses, 528 foram incluídos no estudo, e a proporção estimada de infecções recentes foi de 13,1%. Em Curitiba, foram diagnosticadas 1.013 pessoas de 13 anos e mais, 497 participaram do estudo, e a proporção de infecções recentes foi de 10,5%. Em Recife, a taxa de incidência estimada foi de 53,1 por 100 mil habitantes de 13 anos e mais, enquanto em Curitiba, de 41,1 por 100 mil, com razão do sexo masculino para o feminino de 3,5 e 2,4, respectivamente. Foram evidenciadas elevadas taxas de incidência de HIV entre homens que fazem sexo com homens, de 1,47% em Recife e 0,92% em Curitiba. CONCLUSÕES Os resultados obtidos nas duas cidades mostraram que o grupo dos homens que fazem sexo com homens está desproporcionalmente sujeito ao maior risco de novas infecções, e indicam que estratégias para controle da disseminação da epidemia nesse subgrupo populacional são essenciais e urgentes.

Tendency of mortality in acute myocardial infarction in Curitiba (PR) in the period of 1998 to 2009.

BACKGROUND: Acute Myocardial Infarction (AMI) is the single leading cause of death among non-transmitted chronic diseases in Brazil. The knowledge of mortality trends is necessary for planning prevention strategies. OBJECTIVE: To evaluate trends in mortality from myocardial infarction in the period from 1998 to 2009 in Curitiba (PR), their distribution by gender, age and their impact in reducing the absolute number of deaths from this disease in this period. METHODS: Demographic data were obtained from the Brazilian Institute of Geography and Statistics (IBGE) and death data were obtained from the Mortality Information System of the Ministry of Health, considering gender, age and residence. From the fit of a Poisson regression model we estimated mortality rates and expected number of deaths that were not observed. RESULTS: We found significant downward trend (p < 0.001) in the period. The estimated average reduction in death rate from AMI each year was 3.8% (95% CI: 3.2% - 4.5%). There was no significant difference between genders (p = 0.238), although the evolution of age-specific standard mortality rates differed significantly between the groups (p = 0.018). It is estimated that the annual reduction of 3.8% in the mortality rate has resulted in 2,168 deaths below the number expected given the mortality rate observed in 1998 and projecting that number on the population growth occurred during the study period. CONCLUSION: Although it remains an important cause of death, mortality from AMI decreased significantly during the evaluation period.

Tendência de mortalidade por infarto agudo do miocárdio em Curitiba (PR) no período de 1998 a 2009 / Tendency of mortality in acute myocardial infarction in Curitiba (PR) in the period of 1998 to 2009 / Tendencia de mortalidad por infarto agudo de miocardio en Curitiba (PR) en el período de 1998 a 2009

FUNDAMENTO: O Infarto Agudo do Miocárdio (IAM) é a principal causa isolada de óbito entre as doenças crônicas não transmissíveis no Brasil. O conhecimento das tendências de mortalidade é necessário para o planejamento de estratégias de prevenção. OBJETIVO: Avaliar a tendência de mortalidade por infarto do miocárdio no período de 1998 a 2009 na cidade de Curitiba (PR), sua distribuição por gênero, faixa etária e seu impacto na redução do número absoluto de mortes por essa doença nesse período. MÉTODOS: Dados demográficos foram obtidos do Instituto Brasileiro de Geografia e Estatística e dados de óbitos foram obtidos no Sistema de Informação de Mortalidade do Ministério da Saúde, considerando gênero, faixa etária e residência. A partir do ajuste de um modelo de Regressão de Poisson foram estimadas taxas de mortalidade e número de mortes esperadas que não foram observadas. RESULTADOS: Foi encontrada tendência de declínio significativa (p < 0,001) no período. A estimativa da redução média na taxa de óbito por IAM a cada ano foi de 3,8% (IC 95%: 3,2% - 4,5%). Não houve diferença significativa entre os gêneros (p = 0,238); entretanto, a evolução das taxas padronizadas específicas por idade diferiu significativamente entre as faixas etárias (p = 0,018). Estima-se que a redução anual de 3,8% na taxa de mortalidade tenha resultado em 2.168 mortes aquém do número esperado, considerando a taxa de mortalidade observada em 1998 e projetando esse número sobre o crescimento populacional ocorrido no período estudado. CONCLUSÃO: Embora permaneça como causa importante de óbito, a mortalidade por IAM apresentou queda significativa no período avaliado.

BACKGROUND: Acute Myocardial Infarction (AMI) is the single leading cause of death among non-transmitted chronic diseases in Brazil. The knowledge of mortality trends is necessary for planning prevention strategies. OBJECTIVE: To evaluate trends in mortality from myocardial infarction in the period from 1998 to 2009 in Curitiba (PR), their distribution by gender, age and their impact in reducing the absolute number of deaths from this disease in this period. METHODS: Demographic data were obtained from the Brazilian Institute of Geography and Statistics (IBGE) and death data were obtained from the Mortality Information System of the Ministry of Health, considering gender, age and residence. From the fit of a Poisson regression model we estimated mortality rates and expected number of deaths that were not observed. RESULTS: We found significant downward trend (p < 0.001) in the period. The estimated average reduction in death rate from AMI each year was 3.8% (95% CI: 3.2% - 4.5%). There was no significant difference between genders (p = 0.238), although the evolution of age-specific standard mortality rates differed significantly between the groups (p = 0.018). It is estimated that the annual reduction of 3.8% in the mortality rate has resulted in 2,168 deaths below the number expected given the mortality rate observed in 1998 and projecting that number on the population growth occurred during the study period. CONCLUSION: Although it remains an important cause of death, mortality from AMI decreased significantly during the evaluation period.

FUNDAMENTO: El Infarto Agudo de Miocardio (IAM) es la principal causa aislada de óbito entre las enfermedades crónicas no transmisibles en el Brasil. El conocimiento de las tendencias de mortalidad es necesario para la planificación de estrategias de prevención. OBJETIVO: Evaluar la tendencia de mortalidad por infarto de miocardio en el período de 1998 a 2009 en la ciudad de Curitiba (PR), su distribución por género, franja etárea y su impacto en la reducción del número absoluto de muertes por esa enfermedad en ese período. MÉTODOS: Datos demográficos fueron obtenidos del Instituto Brasileiro de Geografia y Estatística y datos de óbitos fueron obtenidos en el Sistema de Información de Mortalidad del Ministerio de Salud, considerando género, franja etárea y residencia. A partir del ajuste de un modelo de Regresión de Poisson fueron estimadas las tasas de mortalidad y número de muertes esperadas que no fueron observadas. RESULTADOS: Fue encontrada tendencia de declinación significativa (p < 0,001) en el período. La estimativa de la reducción media en la tasa de óbito por IAM cada año fue de 3,8% (IC 95%: 3,2% - 4,5%). No hubo diferencia significativa entre los géneros (p = 0,238); entre tanto, la evolución de las tasas estandarizadas específicas por edad difirió significativamente entre las franjas etáreas (p = 0,018). Se estima que la reducción anual de 3,8% en la tasa de mortalidad haya resultado en 2.168 muertes menos del número esperado, considerando la tasa de mortalidad observada en 1998 y proyectando ese número sobre el crecimiento poblacional ocurrido en el período estudiado. CONCLUSIONES: Aunque permanezca como causa importante de óbito, la mortalidad por IAM presentó caída significativa en el período evaluado.

Vigilância de eventos adversos pós-vacinação e segurança de programas de imunização / Surveillance of adverse effects following vaccination and safety of immunization programs

O objetivo da revisão foi analisar aspectos conceituais e operacionais de sistemas de vigilância de eventos adversos pós-vacina. Foram incluídos artigos disponíveis em formato eletrônico, publicados entre 1985 e 2009, selecionados nas bases Medline/PubMed, com as palavras-chave: "adverse events following vaccine", "adverse events following vaccine surveillance", "post-marketing surveillance" e "safety vaccine" e "Phase IV clinical trials", e excluídos aqueles com foco em tipos específicos desses eventos. Foram apontados os principais aspectos que justificam a importância dos eventos adversos pós-vacina em saúde pública, os instrumentos que garantem a segurança das vacinas e as finalidades, atributos, tipos, interpretações de dados, limitações e novos desafios da vigilância de eventos adversos pós-vacina, bem como estratégias para aumentar sua sensibilidade. A revisão é concluída com desafios para os próximos anos, visando à segurança e confiabilidade dos programas de vacinação.(AU)

Vaccination coverage among children under two years of age based on electronic immunization registry in Southern Brazil / Cobertura vacinal em menores de dois anos a partir de registro informatizado de imunização em Curitiba, PR

OBJETIVO: Avaliar o programa de imunização de crianças de 12 e de 24 meses de idade, com base no registro informatizado de imunização. MÉTODOS: Estudo descritivo em amostra probabilística de 2.637 crianças nascidas em 2002 e residentes em Curitiba, PR. As fontes de dados foram: registro informatizado de imunização do município, Sistema de Informação de Nascidos Vivos e inquérito domiciliar para casos com registro incompleto. As coberturas foram estimadas aos 12 e aos 24 meses de vida e analisadas segundo características socioeconômicas de cada distrito sanitário e o vínculo das crianças aos serviços de saúde. Foram analisadas a abrangência, completude e duplicidades do registro informatizado de imunização. RESULTADOS: A cobertura do esquema de imunização foi de 95,3 por cento aos 12 meses sem diferenças entre os distritos e de 90,3 por cento aos 24 meses, tendo sido mais elevada em um distrito com piores indicadores socioeconômicos (p = 0,01). A proporção de vacinas, segundo o tipo, aplicadas antes e após a idade recomendada foi de até 0,9 por cento e até 32,2 por cento, respectivamente. A cobertura do registro informatizado de imunização foi de 98 por cento na amostra estudada, o sub-registro de doses de vacinas foi de 11 por cento e a duplicidade de registro foi de 20,6 por cento. Os grupos que apresentaram maiores coberturas foram: crianças com cadastro definitivo, aquelas com três ou mais consultas pelo Sistema Único de Saúde e as atendidas em Unidades Básicas de Saúde que adotam plenamente a Estratégia de Saúde da Família. CONCLUSÕES: A cobertura vacinal em Curitiba mostrou-se elevada e homogênea entre os distritos, e o vínculo com os serviços de saúde foi fator importante para tais resultados. O registro informatizado de imunização mostrou-se útil no monitoramento da cobertura vacinal; no entanto, é importante a prévia avaliação do seu custo-efetividade para que seja amplamente utilizado pelo Programa Nacional de Imunização.

OBJECTIVE: To evaluate the immunization program for 12 and 24-month-old children based on electronic immunization registry. METHODS: A descriptive study of a random sample of 2,637 children born in 2002 living in the city of Curitiba, Southern Brazil was performed. Data was collected from local electronic immunization registers and the National Live Birth Information System, as well as from a household survey for cases with incomplete records. Coverage at 12 and 24 months was estimated and analyzed according to the socioeconomic characteristics of each administrative district and the child's enrollment status in the health care service. The coverage, completeness, and record duplication in the registry were analyzed. RESULTS: Coverage of immunization was 95.3% at 12 months, with no disparities among administrative districts, and 90.3% at 24 months, with higher coverage in a district with lower socioeconomic conditions (p < 0.01). The proportion of vaccines, according to type, given before and after the recommended age reached 0.9% and 32.2%, respectively. In the surveyed sample, electronic immunization registry coverage was 98%, underreporting of vaccine doses was 11%, and record duplication was 20.6%. Groups with highest coverage included children with permanent records, children with three or more appointments through the National Unified Health Care System, and children seen within Primary Health Care Facilities fully adopting the Family Health Strategy. CONCLUSIONS: Vaccination coverage in Curitiba was high and homogeneous among districts, and health service enrollment status was an important factor in these results. The electronic immunization registry was a useful tool for monitoring vaccine coverage; however, it will be important to determine cost-effectiveness prior to wide-scale adoption by the National Immunization Program.

Vigilância de eventos adversos pós-vacinação e segurança de programas de imunização: [revisão] / Vigilancia de eventos adversos post vacunación y seguridad de programas de inmunización: [revisión] / Surveillance of adverse effects following vaccination and safety of immunization programs: [review]

O objetivo da revisão foi analisar aspectos conceituais e operacionais de sistemas de vigilância de eventos adversos pós-vacina. Foram incluídos artigos disponíveis em formato eletrônico, publicados entre 1985 e 2009, selecionados nas bases Medline/PubMed, com as palavras-chave: "adverse events following vaccine", "adverse events following vaccine surveillance", "post-marketing surveillance" e "safety vaccine" e "Phase IV clinical trials", e excluídos aqueles com foco em tipos específicos desses eventos. Foram apontados os principais aspectos que justificam a importância dos eventos adversos pós-vacina em saúde pública, os instrumentos que garantem a segurança das vacinas e as finalidades, atributos, tipos, interpretações de dados, limitações e novos desafios da vigilância de eventos adversos pós-vacina, bem como estratégias para aumentar sua sensibilidade. A revisão é concluída com desafios para os próximos anos, visando à segurança e confiabilidade dos programas de vacinação.

El objetivo de la revisión fue analizar aspectos conceptuales y operacionales de sistemas de vigilancia de eventos adversos post vacuna. Fueron incluidos artículos disponibles en formato electrónico, publicados entre 1985 y 2009, seleccionados en las bases PubMed/Medline, con las palabras clave: "vigilancia de eventos adversos post vacuna", "vigilancia post comercialización", "seguridad de vacunas" y "estudios de Fase IV", y excluidos aquellos con foco en tipos específicos de tales eventos. Se señalaron los principales aspectos que justifican la importancia de los eventos adversos post vacuna en salud pública, los instrumentos que garantizan la seguridad de las vacunas y las finalidades, atributos, tipos, interpretaciones de datos, limitaciones y nuevos desafíos de la vigilancia de eventos adversos post vacuna, así como estrategias para aumentar su sensibilidad. Se concluye con desafíos para los próximos años, buscando seguridad y confiabilidad de los programas de vacunación.

Vaccination coverage among children under two years of age based on electronic immunization registry in Southern Brazil.

OBJECTIVE: To evaluate the immunization program for 12 and 24-month-old children based on electronic immunization registry. METHODS: A descriptive study of a random sample of 2,637 children born in 2002 living in the city of Curitiba, Southern Brazil was performed. Data was collected from local electronic immunization registers and the National Live Birth Information System, as well as from a household survey for cases with incomplete records. Coverage at 12 and 24 months was estimated and analyzed according to the socioeconomic characteristics of each administrative district and the child's enrollment status in the health care service. The coverage, completeness, and record duplication in the registry were analyzed. RESULTS: Coverage of immunization was 95.3% at 12 months, with no disparities among administrative districts, and 90.3% at 24 months, with higher coverage in a district with lower socioeconomic conditions (p < 0.01). The proportion of vaccines, according to type, given before and after the recommended age reached 0.9% and 32.2%, respectively. In the surveyed sample, electronic immunization registry coverage was 98%, underreporting of vaccine doses was 11%, and record duplication was 20.6%. Groups with highest coverage included children with permanent records, children with three or more appointments through the National Unified Health Care System, and children seen within Primary Health Care Facilities fully adopting the Family Health Strategy. CONCLUSIONS: Vaccination coverage in Curitiba was high and homogeneous among districts, and health service enrollment status was an important factor in these results. The electronic immunization registry was a useful tool for monitoring vaccine coverage; however, it will be important to determine cost-effectiveness prior to wide-scale adoption by the National Immunization Program.

Surveillance of adverse effects following vaccination and safety of immunization programs.

The aim of the review was to analyze conceptual and operational aspects of systems for surveillance of adverse events following immunization. Articles available in electronic format were included, published between 1985 and 2009, selected from the PubMed/Medline databases using the key words "adverse events following vaccine surveillance", "post-marketing surveillance", "safety vaccine" and "Phase IV clinical trials". Articles focusing on specific adverse events were excluded. The major aspects underlying the Public Health importance of adverse events following vaccination, the instruments aimed at ensuring vaccine safety, and the purpose, attributes, types, data interpretation issues, limitations, and further challenges in adverse events following immunization were describe, as well as strategies to improve sensitivity. The review was concluded by discussing the challenges to be faced in coming years with respect to ensuring the safety and reliability of vaccination programs.

O impacto do programa mãe curitibana sobre a transmissão vertical do HIV no município de Curitiba entre 2000 e 2009 / The impact of the "mãe curitibana" program on the mother-to-child transmission of HIV in Curitiba between 2000 and 2009

Introdução: grande parte dos diagnósticos da infecção pelo HIV em mulheres ocorre durante a gestação e a transmissão vertical é a principal forma de aquisição do HIV em crianças. Assim, a assistência pré-natal representa excelente oportunidade para ações profiláticas, visto que sem medidas de intervenção durante a gestação, a taxa de transmissão do HIV atinge 30%. Objetivo: o presente estudo descreve as ações do Programa Mãe Curitibana em relação às gestantes HIV-positivo e a transmissão vertical. Métodos: análise retrospectiva no período de 2000 a 2009 dos dados de notificação e assistência de gestantes HIV-positivo residentes em Curitiba. Resultados: na ausência de intervenções, calcula-se que dentre as 1.169 gestantes HIV-positivo notificadas de 2000-2009 poderiam ocorrer 350 infecções verticais. Neste contexto, o total de 44 recém-nascidos infectados nestes 10 anos evidencia que as intervenções realizadas para evitar a transmissão contribuíram para evitar um total de 306 crianças infectadas verticalmente pelo HIV em Curitiba. Medidas como atestagem HIV descentralizada de gestantes, parturientes e parceiros, o referenciamento para acompanhamento especializado, a medicação antirretroviral na gestação, no parto e para o RN, cesariana eletiva quando indicada, inibição da lactação e acompanhamento de puerpério e puericultura mostraram-se eficazes para esta redução da transmissão. Com esforços, a taxa de transmissão que em 1999 se encontrava em 5,1% passou para 2,5% em 2009. Conclusão: acaptação precoce da gestante, o diagnóstico laboratorial, a organização dos fluxos, medidas rápidas de intervenção, adesão ao tratamento, acompanhamento da criança e da mulher são ações do Programa Mãe Curitibana que têm auxiliado na diminuição da transmissão vertical do HIV.

Introduction: the majority of diagnoses of HIV infection in women occur during pregnancy and the mother-to-child transmission is the main form of HIV infection in children. Therefore, prenatal care represents an excellent opportunity for prophylaxis, because with out intervention measures during pregnancy,the rate of HIV transmission reaches 30%. Objective: this study describes the actions of the "Mãe Curitibana" Program in relation to HIV positive pregnant women and the mother-to-child HIV transmission. Methods: retrospective analysis of 2000 to 2009 assistance and reporting data of HIV positive pregnant women living in Curitiba. Results: it is estimated that among the 1,169 HIV positive pregnant women reported in this period could occur 350 vertical infections. In this context, a total of 44 infected infants in these 10 years show that interventions to prevent transmission contributed to avoid a total of 306 vertically HIV infected children in Curitiba. Measures such as decentralized HIV testing of pregnant women, parturient and partners, referrals to specialized treatment, so as antiretroviral medication during pregnancy, childbirth and the newborn, the inhibition of lactation and postpartum and childcare follow-uphave been effective for this reducing transmission. With effort, the transmission rate in 1999 was at 5.1% and reduces to 2.5% in 2009. Conclusion: the early capture of pregnant womens, the organization of flowcharts, rapid intervention measures, treatment adherence, monitoring of children and women areactions of the "Mãe Curitibana" Program that has helped in reducing mother-to-child transmission of HIV.

Sistemas informatizados de registro de imunização: uma revisão com enfoque na saúde infantil: [revisão] / Immunization computerized database system: a revision with approach in child health: [revisão]

São apresentadas diferentes experiências e metodologias empregadas por registros informatizados de imunização (RII), no enfoque da saúde infantil. O levantamento bibliográfico abrangeu publicações de 1990 a 2006, existentes nas bases MEDLINE, SciELO, PubMed e EMBASE. Outros sítios eletrônicos de organizações nacionais e internacionais de saúde foram pesquisados. Em virtude da ausência de publicações sobre RII no Brasil, as fontes de informação foram a Coordenação Nacional e as Coordenações Estaduais do Programa Nacional de Imunizações, além do Departamento de Informática do Sistema Único de Saúde. Selecionaram-se apenas artigos que abordam RII em saúde infantil. Foram localizados 109 artigos publicados em 35 revistas especializadas. São apresentados aspectos históricos e conceituais, objetivos, funções, relevância e indicadores de desempenho e de custo-efetividade, além das próprias limitações dos RII, assim como experiências em países selecionados, inclusive no Brasil. Os RII integrados a outros sistemas de informação vêm sendo aplicados como importante instrumento para a identificação de populações com menor acesso ou adesão aos programas de vacinação e em sistemas de vigilância ativa de eventos adversos pós-vacina.

Different experiences and methodologies used for immunization computerized database (ICD) with focus in child health were presented. Bibliographical survey from 1990 to 2006 was undertaken, using as sources MEDLINE, SciELO, PubMed and EMBASE databases. Other sites of national and international organizations of health had also been searched. As have no publications on ICD in Brazil, survey of these registers was carried through, taking as source the national and State Coordinations of the National Program of Immunizations and the Department of Computer Science of the National System of Health. Only articles with focus on child health were selected: 109 publications in 35 specialized journals were localized. Historical and conceptual aspects, objective, functions, relevance, performance and costeffectiveness indicators, and own limitations of the ICD are presented, as well as experiences in selected countries, including Brazil. The ICD integrated to other information systems is being applied as important instrument for the identification of populations with lower access or adherence to the vaccination programs and in active surveillance of adverse effects post-vaccination.

HIV testing during pregnancy: use of secondary data to estimate 2006 test coverage and prevalence in Brazil.

This paper describes a methodological proposal based on secondary data and the main results of the HIV-Sentinel Study among childbearing women, carried out in Brazil during 2006. A probabilistic sample of childbearing women was selected in two stages. In the first stage, 150 health establishments were selected, stratified by municipality size (<50,000; 50,000-399,999; 400,000+). In the second stage, 100-120 women were selected systematically. Data collection was based on HIV-test results registered in pre-natal cards and in hospital records. The analysis focused on coverage of HIV-testing during pregnancy and HIV prevalence rate. Logistic regression models were used to test inequalities in HIV-testing coverage during pregnancy by macro-region of residence, municipality size, race, educational level and age group. The study included 16,158 women. Results were consistent with previous studies based on primary data collection. Among the women receiving pre-natal care with HIV-test results registered in their pre-natal cards, HIV prevalence was 0.41%. Coverage of HIV-testing during pregnancy was 62.3% in the country as a whole, but ranged from 40.6% in the Northeast to 85.8% in the South. Significant differences according to race, educational level and municipality size were also found. The proposed methodology is low-cost, easy to apply, and permits identification of problems in routine service provision, in addition to monitoring compliance with Ministry of Health recommendations for pre-natal care.