Long-term surveillance of invasive pneumococcal disease: The impact of 10-valent pneumococcal conjugate vaccine in the metropolitan region of Salvador, Brazil.

BACKGROUND: In 2010, Brazil introduced the ten-valent pneumococcal conjugate vaccine (PCV10) in the national infant immunization program. Limited data on the long-term impact of PCV10 are available from lower-middle-income settings. We examined invasive pneumococcal disease (IPD) in Salvador, Bahia, over 11 years. METHODS: Prospective laboratory-based surveillance for IPD was carried out in 9 hospitals in the metropolitan region of Salvador from 2008 to 2018. IPD was defined as Streptococcus pneumoniae cultured from a normally sterile site. Serotype was determined by multiplex polymerase chain reaction and/or Quellung reaction. Incidence rates per 100,000 inhabitants were calculated for overall, vaccine-type, and non-vaccine-type IPD using census data as the denominator. Incidence rate ratios (IRRs) were calculated to compare rates during the early (2010-2012), intermediate (2013-2015), and late (2016-2018) post-PCV10 periods in comparison to the pre-PCV10 period (2008-2009). RESULTS: Pre-PCV10, overall IPD incidence among all ages was 2.48/100,000. After PCV10 introduction, incidence initially increased (early post-PCV10 IRR 3.80, 95% CI 1.18-1.99) and then declined to 0.38/100,000 late post-PCV10 (IRR 0.15; 95% CI 0.09-0.26). The greatest reductions in the late post-PCV10 period were observed in children aged ≤2 years, with no cases (IRR not calculated) and those ≥60 years (IRR 0.11, 95% CI 0.03-0.48). Late post-PCV10, significant reductions were observed for both PCV10 serotypes (IRR 0.02; 95% CI 0.0-0.15) and non-PCV10 serotypes (IRR 0.27; 95%CI 0.14-0.53). Non-PCV10 serotypes 15B, 12F, 3, 17F, and 19A became predominant late post-PCV10 without a significant increase in serotype-specific IPD incidence compared to pre-PCV10. CONCLUSION: Significant declines in IPD, including among adults not eligible for vaccination, suggest direct and indirect protection up to nine years after PCV10 introduction, without evidence of significant replacement disease. Continued surveillance is needed to monitor changes in non-vaccine serotypes and inform decisions about introducing higher valent PCVs.

The early evolution of COVID-19 incidence and mortality among people aged under 80 years or 80 years and above after COVID-19 vaccine implementation in the state of Bahia, Brazil.

This study evaluates the early effects of COVID-19 vaccine implementation in the number of cases and deaths due to COVID-19 among those aged < 80 years or ≥ 80 years in the state of Bahia, Brazil. For that, we used data from the Bahia state Secretary of Health platform of cases and deaths due to COVID-19 in all age groups, between March 2020 and May 2021, when 82% of COVID-19 vaccines were CoronaVac. Overall, there were 1,012,200 cases and 21,241 deaths due to COVID-19, of which, respectively, 2.3% and 25.3% occurred in patients aged ≥ 80 years. The median proportion of deaths in those ≥ 80 years decreased from 29.8% (27.8%-30.4%) in the pre- to 18.8% (15.6%-18.8%) in the post-vaccine periods (p = 0.04). Significant reduction in the median proportion of deaths from COVID-19 among those aged ≥ 80 years after COVID-19 vaccine implementation was found, which suggests CoronaVac effectiveness against death from COVID-19 in the elderly.

Cell adhesion proteins in the cerebrospinal fluid of neonates prenatally exposed to Zika virus: A case-control study.

To compare cell adhesion molecules levels in cerebrospinal fluid (CSF) between Zika virus (ZIKV)-exposed neonates with/without microcephaly (cases) and controls, 16 neonates (cases), 8 (50%) with and 8 (50%) without microcephaly, who underwent lumbar puncture (LP) during the ZIKV epidemic (2015-2016) were included. All mothers reported ZIKV clinical symptoms during gestation, all neonates presented with congenital infection findings, and other congenital infections were ruled out. Fourteen control neonates underwent LP in the same laboratory (2017-2018). Five cell adhesion proteins were measured in the CSF using mass spectrometry. Neurexin-1 (3.50 [2.00-4.00] vs. 7.5 [5.00-10.25], P = 0.001), neurexin-3 (0.00 [0.00-0.00] vs. 3.00 [1.50-4.00], P = 0.001) and neural cell adhesion molecule 2 (NCAM2) (0.00 [0.00-0.75] vs. 1.00 [1.00-2.00], P = 0.001) were significantly lower in microcephalic and non-microcephalic cases than in controls. When these two sub-groups of prenatally ZIKA-exposed children were compared to controls separately, the same results were found. When cases with and without microcephaly were compared, no difference was found. Neurexin-3 (18.8% vs. 78.6%, P = 0.001) and NCAM2 (25.0% vs. 85.7%, P = 0.001) were less frequently found among the cases. A positive correlation was found between cephalic perimeter and levels of these two proteins. Neurexin-2 and neurexin-2b presented no significant differences. Levels of three cell adhesion proteins were significantly lower in CSF of neonates exposed to ZIKV before birth than in controls, irrespective of presence of congenital microcephaly. Moreover, the smaller the cephalic perimeter, the lower CSF cell adhesion protein levels. These findings suggest that low CSF levels of neurexin-1, neurexin-3 and NCAM2 may reflect the effects of ZIKV on foetal brain development.

Impact of meningococcal C conjugate vaccine on incidence of invasive meningococcal disease in an 18-year time series in Brazil and in distinct Brazilian regions.

OBJECTIVE: To evaluate the impact of meningococcal C conjugate (MCC) vaccine in Brazil. METHODS: Ecological study assessing all invasive meningococcal disease (IMD) and meningococcal C disease (MenC) cases reported in all age groups, from 2001 to 2019. MCC was implemented in 2010. Data were collected on the DATASUS platform. Joinpoint regression was performed to assess the annual percent change (APC) of the incidence rate. RESULTS: Invasive meningococcal disease incidence decreased in all Brazilian regions from 2001 onwards, without apparent additional reduction attributable to MCC vaccine in the North, Northeast and South. The higher and statistically significant APC reduction in all age groups, in the North and South, and in children <5 years, in the Northeast, occurred between 2001 and 2011 (-15.4%), 2004 and 2012 (-14.4%), and 2001 and 2013 (-10.3%), respectively, before MCC vaccine implementation. Annual incidence of MenC in children under 5 years significantly fell in the North (-6.8%; 2011-2018), Southeast (-40.6%; 2010-2015) and Midwest (-48.6%; 2010-2014), which may be attributable to MCC implementation. CONCLUSION: Invasive meningococcal disease and MenC behaved differently after MCC vaccine implementation in Brazil during this 18-year time-series analysis. This suggests that the control of IMD should be based on multiple public health care measures and considered on a regional basis.

Estratégias internacionais de flexibilização da regulação da prática de profissionais de saúde em resposta à pandemia da COVID-19: revisão de escopo / Estrategias internacionales de flexibilización de la regulación de la práctica de profesionales de salud en respuesta a la pandemia de la COVID-19: revisión de alcance / International strategies for flexibilization of the regulation of health workforce practices in response to the COVID-19 pandemic: a scoping review

A COVID-19 foi classificada como pandemia pela Organização Mundial da Saúde (OMS) em 11 de março de 2020. Diante da sua acelerada propagação, governantes, comunidades e serviços de saúde estão tendo que agir na mesma velocidade para ampliar a capacidade da força de trabalho em saúde. Este estudo objetivou, a partir do método revisão de escopo [scoping review], identificar as principais estratégias relacionadas a medidas de flexibilização de regulações que regem as práticas de profissionais de saúde que vêm sendo adotadas e/ou recomendadas internacionalmente. O estudo seguiu as etapas propostas pelo Instituto Joanna Briggs. Para a construção da questão de pesquisa, utilizou-se o método PCC (população, conceito e contexto). A busca se baseou nas seguintes bases de dados: PubMed, Scopus e Base de Dados da OMS; e na literatura cinzenta. Foram identificados 36 documentos, classificados nas seguintes estratégias: (1) ampliação de escopo de prática; (2) transferência de funções de uma categoria profissional para outra; (3) autorização para atendimento e faturamento via telemedicina; (4) licenciamento e recrutamento de profissionais não ativos; (5) recrutamento de profissionais de outras regiões/estado; (6) mudanças na formação e oferta de treinamento. Uma das estratégias mais importantes em resposta a situações de escassez de profissionais de saúde tem sido e a disponibilidade para adaptar, ampliar e redistribuir as atividades dos profissionais, de modo a atender as rápidas mudanças. Esta revisão reflete a importância em se realizarem reformas nas regulações profissionais de forma a otimizar a força de trabalho em saúde existente para que esta possa atender às demandas constantes de necessidade da população.

La COVID-19 fue clasificada como pandemia por la Organización Mundial de la Salud (OMS) el 11 de marzo de 2020. Ante su acelerada propagación, gobernantes, comunidades y servicios de salud están teniendo que actuar a la misma velocidad para ampliar la capacidad de la fuerza de trabajo en salud. Este estudio tuvo como objetivo, a partir del método revisión de alcance, identificar las principales estrategias relacionadas con medidas de flexibilización de regulaciones que rigen las prácticas de profesionales de salud que vienen siendo adoptadas y/o recomendadas internacionalmente. El estudio siguió las etapas propuestas por parte del Instituto Joanna Briggs. Para la construcción de la cuestión de investigación, se utilizó el método PCC (población, concepto y contexto). La búsqueda se basó en las siguientes bases de datos: PubMed, Scopus, Base de Datos de la OMS; y en la literatura gris. Se identificaron 36 documentos, clasificados en las siguientes estrategias: (1) ampliación de ámbito de práctica; (2) transferencia de funciones de una categoría profesional a otra; (3) autorización para atención y facturación vía telemedicina; (4) permisos y reclutamiento de profesionales no activos; (5) reclutamiento de profesionales de otras regiones/estado; (6) cambios en la formación y oferta de entrenamiento. Una de las estrategias más importantes en respuesta a situaciones de escasez de profesionales de salud ha sido la disponibilidad para adaptar, ampliar y redistribuir las actividades de los profesionales, de modo que atienda a cambios rápidos. Esta revisión refleja la importancia de que se realicen reformas en las regulaciones profesionales, de forma que se optimice la fuerza de trabajo en salud existente para que esta pueda atender a las demandas de necesidades constantes de la población.

COVID-19 was declared a pandemic by the World Health Organization (WHO) on March 11, 2020. Given its rapid spread, governments, communities, and health services are having to act with the same speed to expand their health workforce capacity. Based on the scoping review method, this study aimed to identify the principal strategies related to measures for flexibilization of regulations on healthcare workers' practices that have been adopted and/or recommended internationally. The study followed the stages proposed by the Joanna Briggs Institute. The research question was developed with the PCC method (population, concept, and context). Searches were performed in PubMed, Scopus, WHO Database, and the gray literature. A total of 36 documents were identified, classified in the following strategies: (1) expansion of scope of practice; (2) shifting of roles from one professional category to another; (3) authorization for patient care and billing via telemedicine; (4) licensing and recruitment of inactive workers; (5) recruitment of workers from other regions/states; and (6) changes in basic training and supply of new training. One of the most important strategies in response to health workforce shortages has been the willingness to adapt, expand, and redistribute workers' activities to deal with rapid changes. This review reflects the importance of reforms in workforce regulation to optimize the existing health workforce so that it can meet the population's constant needs and demands.

The scope of practice of primary health care physicians in rural and urban areas in Brazil.

This study aimed to identify differences in the scope of practice of primary care physicians and find the main factors associated with expanded practice in rural and urban areas of Brazil. Data from an online survey with 2,277 primary care physicians, conducted between January and March 2016, were used. Differences regarding activities and procedures performed by physicians per area were verified using Kruskal-Wallis/Dunn's post hoc and chi-square tests. Multivariate linear regression analyses were done using a bootstrap technique to identify the main factors associated with an expanded scope of practice. Regardless of the location, the results showed that the practices of the primary care physicians are below their competences. Rural physicians performed a higher number of procedures and activities compared with their peers from intermediate and urban municipalities. Within the overall sample, the variables related to a broader scope of practice included: male gender, work in rural municipalities, participation in training and continuing education programs and consultation of clinical protocols, articles and books. This study contributes with evidence that the medical scope of practice varies according to location. Recognizing and understanding the differences and associated factors for an expanded scope of practice is necessary to determine the skills and resources required for practice in rural and urban areas, collaborating in proposals of strategies to improve quality and access of health care services.

Delafloxacin as a treatment option for community-acquired pneumonia infection.

Community-acquired pneumonia (CAP) is a leading cause of morbidity and mortality in adults. Bacterial pathogens are recognized to be frequent causative agents, which makes antibacterial treatment crucial for the evolution of these patients. There are several antimicrobial options available in daily practice. However, bacterial resistance is a problem. The chemical, pharmacokinetic, pharmacodynamics, and safety characteristics of delafloxacin, a fluoroquinolone, are discussed. The data from one phase 3 clinical trial evaluating the use of delafloxacin in adults with community-acquired pneumonia is also discussed, along with findings from other meaningful studies. In vitro data have shown that delafloxacin has broad spectrum activity. Results from phase 2 and phase 3 studies have demonstrated that delafloxacin use is safe. International guidelines have recommended respiratory fluoroquinolones as second option for non-severe cases and must be considered in very severe patients not improving to a betalactam/macrolide combination. Delafloxacin was compared to moxifloxacin in the phase 3 community-acquired pneumonia trial. Serious and life-long adverse events due to fluoroquinolones use have been recently reported. Delafloxacin may possibly replace currently available fluoroquinolones, particularly in the treatment of resistant pathogens, such as ciprofloxacin-resistant P. aeruginosa isolates when other drugs are inefficient.

Differences between children with severe acute lower respiratory infection with or without SARS-Cov-2 infection.

AIM: to compare clinical features and outcome of children with severe acute lower respiratory infection (ALRI) with or without SARS-CoV-2 infection admitted to Paediatric Intensive Care Unit (PICU). METHODS: for this retrospective cohort study, all children aged<17 years admitted with severe ALRI at a PICU, in Salvador, Brazil were evaluated. Investigation of SARS-CoV-2 infection was performed by real-time reverse-transcription PCR. Clinical data, physical findings upon admission and outcome were registered. Patients were categorized by with or without SARS-Cov-2 infection. Outcomes were death and invasive mechanical ventilation (IMV). RESULTS: we enrolled 210 patients, whose median age was 2.8 years (IQR: 7.1 months-6.2 years). IMV was used in 33 (15.7%; 95%CI 11.3%-21.1%) patients. Eight (3.8%; 95%CI 1.8%-7.1%) cases died. 62 patients (29.5%) tested positive for SARS-CoV-2. Male gender (67.7% vs. 52.7%, P = 0.045) and sickle cell disease (6.5% vs. 0%, P = 0.007) were associated with SARS-CoV-2 infection. Wheezing upon admission was more common in patients without SARS-CoV-2 infection (38.5% vs. 21.0%, P = 0.01). IMV was more frequent among patients with SARS-CoV-2 infection (25.8% vs. 11.5%, P = 0.009) as well as death (8.1% vs. 2.0%, P = 0.05). CONCLUSION: children with severe ALRI infection with SARS-CoV-2 need IMV more frequently than those without it.

Zika-exposed microcephalic neonates exhibit higher degree of inflammatory imbalance in cerebrospinal fluid.

Not every neonate with congenital Zika virus (ZIKV) infection (CZI) is born with microcephaly. We compared inflammation mediators in CSF (cerebrospinal fluid obtained from lumbar puncture) between ZIKV-exposed neonates with/without microcephaly (cases) and controls. In Brazil, in the same laboratory, we identified 14 ZIKV-exposed neonates during the ZIKV epidemic (2015-2016), 7(50%) with and 7(50%) without microcephaly, without any other congenital infection, and 14 neonates (2017-2018) eligible to be controls and to match cases. 29 inflammation mediators were measured using Luminex immunoassay and multidimensional analyses were employed. Neonates with ZIKV-associated microcephaly presented substantially higher degree of inflammatory perturbation, associated with uncoupled inflammatory response and decreased correlations between concentrations of inflammatory biomarkers. The groups of microcephalic and non-microcephalic ZIKV-exposed neonates were distinguished from the control group (area under curve [AUC] = 1; P < 0.0001). Between controls and those non-microcephalic exposed to ZIKV, IL-1ß, IL-3, IL-4, IL-7 and EOTAXIN were the top CSF markers. By comparing the microcephalic cases with controls, the top discriminant scores were for IL-1ß, IL-3, EOTAXIN and IL-12p70. The degree of inflammatory imbalance may be associated with microcephaly in CZI and it may aid additional investigations in experimental pre-clinical models testing immune modulators in preventing extensive damage of the Central Nervous System.

Seasonality of distinct respiratory viruses in a tropical city: implications for prophylaxis.

OBJECTIVE: The frequency and seasonality of viruses in tropical regions are scarcely reported. We estimated the frequency of seven respiratory viruses and assessed seasonality of respiratory syncytial virus (RSV) and influenza viruses in a tropical city. METHODS: Children (age ≤ 18 years) with acute respiratory infection were investigated in Salvador, Brazil, between July 2014 and June 2017. Respiratory viruses were searched by direct immunofluorescence and real-time polymerase chain reaction for detection of RSV, influenza A virus, influenza B virus, adenovirus (ADV) and parainfluenza viruses (PIV) 1, 2 and 3. Seasonal distribution was evaluated by Prais-Winsten regression. Due to similar distribution, influenza A and influenza B viruses were grouped to analyse seasonality. RESULTS: The study group comprised 387 cases whose median (IQR) age was 26.4 (10.5-50.1) months. Respiratory viruses were detected in 106 (27.4%) cases. RSV (n = 76; 19.6%), influenza A virus (n = 11; 2.8%), influenza B virus (n = 7; 1.8%), ADV (n = 5; 1.3%), PIV 1 (n = 5; 1.3%), PIV 3 (n = 3; 0.8%) and PIV 2 (n = 1; 0.3%) were identified. Monthly count of RSV cases demonstrated seasonal distribution (b3 = 0.626; P = 0.003). More than half (42/76 [55.3%]) of all RSV cases were detected from April to June. Monthly count of influenza cases also showed seasonal distribution (b3 = -0.264; P = 0.032). Influenza cases peaked from November to January with 44.4% (8/18) of all influenza cases. CONCLUSIONS: RSV was the most frequently detected virus. RSV and influenza viruses showed seasonal distribution. These data may be useful to plan the best time to carry out prophylaxis and to increase the number of hospital beds.

The impact of 10-valent pneumococcal conjugate vaccine upon hospitalization rate of children with pneumonia in different Brazilian administrative regions.

BACKGROUND: Streptococcus pneumoniae is the most frequent bacterial causative agent of pneumonia. Due to its significant contribution to the morbidity and mortality profile and the country's economy, the 10-valent pneumococcal vaccine (PCV10) was introduced in Brazil in 2010. Brazil is divided into five administrative regions which differ in social-economic indices among each other. Estimates of PCV10 impact on hospitalization rates due to pneumonia stratified by distinct Brazilian regions are limited. We assessed this issue. METHODS: This is a population-based ecological investigation. Data about hospitalizations due to pneumonia, asthma or urinary tract infection (UTI) among patients aged under 20 years in the pre-exposure (2003-2009) and in the post-exposure (2011-2017) periods were retrieved from the National Health System - Hospital Information System (SIH-SUS) database. The total resident population by age group in each year was retrieved from the Brazilian Institute for Geography and Statistics database. Hospitalization rates were estimated for each Brazilian region and the rates obtained in the pre-exposure and in the post-exposure periods were compared by Prais-Winsten regression. The Human Development Index (HDI) evolved differently in the distinct regions during the study period. RESULTS: Overall, hospitalization rates due to pneumonia declined by 34.5%. Similar trends were observed for hospitalization rates due to asthma and UTI. The same pattern was observed in each Brazilian region. However, the North region was the only one that presented an exponential incidence decline pattern, which could be explained by PCV10 implementation (declined by 10.8% in the quadratic regression, p < 0.01). Only in the North region, significant decline was observed among patients aged 0-4 years (-12.5%; p = 0.01), 5-9 years (-38.5%; p < 0.01) or 10-14 years (-10.7%; p = 0.03). CONCLUSION: Significant variation in the downward trend of hospitalization rate was only found in the North region, which evolved from very low HDI in 2003; medium HDI in 2010 to high HDI in 2017.

Engineering Silk Fibroin-Based Nerve Conduit with Neurotrophic Factors for Proximal Protection after Peripheral Nerve Injury.

Artificial nerve conduits capable of adequately releasing neurotrophic factors are extensively studied to bridge nerve defects. However, the lack of neurotrophic factors in the proximal area and their visible effects in axonal retrograde transport following nerve injury is one of the factors causing an incomplete nerve regeneration. Herein, an advanced conduit made of silk fibroin is produced, which can incorporate growth factors and promote an effective regeneration after injury. For that, enzymatically crosslinked silk fibroin-based conduits are developed to be used as a platform for the controlled delivery of neurotrophic factors. Nerve growth factor and glial-cell line derived neurotrophic factor (GDNF) are incorporated using two different methodologies: i) crosslinking and ii) absorption method. The release profile is measured by ELISA technique. The bioactivity of the neurotrophic factors is evaluated in vitro by using primary dorsal root ganglia. When implanted in a 10 mm sciatic nerve defect in rats, GDNF-loaded silk fibroin conduits reveal retrograde neuroprotection as compared to autografts and plain silk fibroin conduit. Therefore, the novel design presents a substantial improvement of retrograde trafficking, neurons' protection, and motor nerve reinnervation.

Effect of pneumococcal conjugate vaccines on mortality from lower respiratory infections and pneumonia among under-fives.

There is a well-known inverse association between mortality rate from infectious diseases and improvements in socioeconomic status, even though longer time-series are required to demonstrate this relationship. This general rule seems to apply to mortality from pneumonia in children in the pneumococcal conjugate vaccine (PCV) era. Two recent published secular trend studies spanning from about 30 years among Brazilians under the age of five show either no effect of PCV - not even death rate decline from pneumococcal meningitis - or a modest one (8% reduction). Time-series mortality studies from pneumonia are needed for both, developed and developing countries, those who have implemented PCV or not. Results from these studies would provide critical input and feedback to public health policy makers.

The scope of practice of primary health care physicians in rural and urban areas in Brazil / O escopo da prática de médicos na atenção primária nas áreas rural e urbana do Brasil / Alcance de las consultas médicas en la atención primaria en salud en áreas rurales y urbanas brasileñas

This study aimed to identify differences in the scope of practice of primary care physicians and find the main factors associated with expanded practice in rural and urban areas of Brazil. Data from an online survey with 2,277 primary care physicians, conducted between January and March 2016, were used. Differences regarding activities and procedures performed by physicians per area were verified using Kruskal-Wallis/Dunn's post hoc and chi-square tests. Multivariate linear regression analyses were done using a bootstrap technique to identify the main factors associated with an expanded scope of practice. Regardless of the location, the results showed that the practices of the primary care physicians are below their competences. Rural physicians performed a higher number of procedures and activities compared with their peers from intermediate and urban municipalities. Within the overall sample, the variables related to a broader scope of practice included: male gender, work in rural municipalities, participation in training and continuing education programs and consultation of clinical protocols, articles and books. This study contributes with evidence that the medical scope of practice varies according to location. Recognizing and understanding the differences and associated factors for an expanded scope of practice is necessary to determine the skills and resources required for practice in rural and urban areas, collaborating in proposals of strategies to improve quality and access of health care services.

O estudo buscou identificar diferenças no escopo da prática de médicos na atenção primária e os principais fatores associados com a ampliação dessa prática nas áreas rural e urbana do Brasil. Foram usados dados de um inquérito online com 2.277 médicos de atenção primária, realizado entre janeiro e março de 2016. Foram utilizados os testes de Kruskal-Wallis/post hoc de Dunn e qui-quadrado para verificar as diferenças em relação às atividades e procedimentos realizados pelos médicos, de acordo com o local. Foram realizadas análises de regressão linear multivariada, usando a técnica bootstrap para identificar os principais fatores associados com o escopo ampliado da prática. Independente de localização, os resultados mostraram que os médicos de atenção primária estão praticando abaixo de seus níveis de competências. Os médicos rurais realizavam mais procedimentos e atividades quando comparados aos colegas de municípios intermediários e urbanos. Na amostra total, as variáveis relacionadas ao escopo ampliado incluíam: sexo masculino, trabalho em municípios rurais, participação em programas de capacitação e de educação continuada, além de consultas a protocolos clínicos, artigos e livros. O estudo corrobora evidências de que o escopo da prática médica varia de acordo com a localização. O reconhecimento e compreensão das diferenças e fatores associados à ampliação do escopo de prática são relevantes para determinar as competências e recursos necessários para a prática médica nas áreas rural e urbana, contribuindo para propostas de estratégias para melhorar a qualidade e acesso a serviços de saúde.

El objetivo de este estudio fue identificar las diferencias en el alcance de las consultas médicas en atención primaria, así como averiguar los principales factores asociados con las consultas practicadas en áreas rurales y urbanas de Brasil. Los datos que se usaron provenían de una encuesta en línea a 2.277 médicos de asistencia primaria, llevada a cabo entre enero y marzo de 2016. Las diferencias, respecto a las actividades y procedimientos realizados por médicos según su localización, fueron verificadas por los test post hoc de Kruskal-Wallis/Dunn y chi-cuadrados. Los análisis de regresión lineal multivariada se realizaron usando una técnica de bootstrap para identificar los factores principales, asociados con un alcance extendido de la consulta. Independientemente de la localización, los resultados mostraron que los médicos de atención primaria están realizando su trabajo por debajo de sus competencias. Los médicos rurales realizaron un número más alto de procedimientos y actividades, comparado con sus pares en municipios de tamaño medio y urbanos. En la muestra global, las variables relacionadas con un alcance más amplio de las consultas incluyeron: género masculino, trabajo en municipalidades rurales, participar en el entrenamiento y programas de educación continua y protocolos de consulta clínica, artículos, y libros. Este estudio corrobora con evidencias que el alcance de las consultas médicas varía según la localización. Reconocer y comprender las diferencias y factores asociados para un alcance extendido de las consultas, son relevantes para determinar las habilidades y recursos requeridos para realizar consultas en áreas rurales y urbanas, así como para colaborar con propuestas de estrategias en la mejora de la calidad y acceso a los servicios de salud.

Systemic cytokines/chemokines associated to radiographic abnormalities in pneumonia in children.

Community-acquired pneumonia (CAP) diagnosis remains a challenge in paediatrics. Chest radiography is considered gold standard for definition of pneumonia, however no previous study assessed the relationship between immune response and radiographic-confirmed-pneumonia. We assessed association between cytokines/chemokines levels and radiographic abnormalities in children with CAP. Children < 5-years-old hospitalized with CAP were investigated in a prospective study at the Federal University of Bahia Hospital, Brazil. On admission, clinical data and biological samples were collected to investigate 20 aetiological agents and determine serum cytokines/chemokines levels; chest radiographs were performed. Among 158 patients, radiographic diagnosis of pneumonia was confirmed in 126(79.7%) and 17(10.8%) had pleural effusion. Viral, bacterial and pneumococcal infection were detected in 80(50.6%), 78(49.4%) and 37(23.4%) cases. By comparing the median concentrations of serum cytokines/chemokines between children with or without pleural effusion, interleukin(IL)-6 was higher (26.6[18.6-103.7] vs 3.0[0.0-19.8]; p < 0.001) among those with pleural effusion; and between children with or without radiographic-confirmed-pneumonia, IL-6 was higher in the first subgroup (4.5[0.0-23.4] vs 0.0[0.0-3.6]; p = 0.02) after having excluded cases with pleural effusion. Stratified analyses according to aetiology showed IL-6 increase in the radiographic-confirmed-pneumonia subgroup inside the pneumococcal infection (28.2[5.9-64.1] vs 0.0[0.0-0.0]; p = 0.03) subgroup. By multivariable analysis, with IL-6 as dependent variable, pneumococcal infection and pleural effusion showed independent association with IL-6 elevation [respective OR: 5.071 (95%CI = 2.226-11.548; p < 0.001) and 13.604 (95%CI = 3.463-53.449; p = 0.0001)]. Considering the cases without pleural effusion, the area under the curve of IL-6 to predict pneumococcal infection was 0.76 (95%CI = 0.66-0.86; p < 0.001). IL-6 increase is a potential biomarker of pneumococcal infection among children with CAP without pleural effusion upon admission.