The Full Value of Vaccine Assessments Concept-Current Opportunities and Recommendations.

For vaccine development and adoption decisions, the 'Full Value of Vaccine Assessment' (FVVA) framework has been proposed by the WHO to expand the range of evidence available to support the prioritization of candidate vaccines for investment and eventual uptake by low- and middle-income countries. Recent applications of the FVVA framework have already shown benefits. Building on the success of these applications, we see important new opportunities to maximize the future utility of FVVAs to country and global stakeholders and provide a proof-of-concept for analyses in other areas of disease control and prevention. These opportunities include the following: (1) FVVA producers should aim to create evidence that explicitly meets the needs of multiple key FVVA consumers, (2) the WHO and other key stakeholders should develop standardized methodologies for FVVAs, as well as guidance for how different stakeholders can explicitly reflect their values within the FVVA framework, and (3) the WHO should convene experts to further develop and prioritize the research agenda for outcomes and benefits relevant to the FVVA and elucidate methodological approaches and opportunities for standardization not only for less well-established benefits, but also for any relevant research gaps. We encourage FVVA stakeholders to engage with these opportunities.

Estimated population-level impact of pneumococcal conjugate vaccines against all-cause pneumonia mortality among unvaccinated age groups in five Latin American countries.

BACKGROUND: Pneumococcal conjugate vaccines (PCVs) provide strong direct protection in children, while limited data are available on their indirect effect on mortality among older age groups. This multi-country study aimed to assess the population-level impact of pediatric PCVs on all-cause pneumonia mortality among ≥5 years of age, and invasive pneumococcal disease (IPD) cases in Chile. METHODS: Demographic and mortality data from Argentina, Brazil, Chile, Colombia, and Mexico were collected considering the ≥ 5-year-old population, from 2000-2019, with 1,795,789 deaths due to all-cause pneumonia. IPD cases in Chile were also evaluated. Time series models were employed to evaluate changes in all-cause pneumonia deaths during the post-vaccination period, with other causes of death used as synthetic controls for unrelated temporal trends. RESULTS: No significant change in death rates due to all-cause pneumonia was detected following PCV introduction among most age groups and countries. The proportion of IPD cases caused by vaccine serotypes decreased from 29% (2012) to 6% (2022) among ≥65 years in Chile. DISCUSSION: While an effect of PCV against pneumonia deaths (a broad clinical definition that may not be specific enough to measure indirect effects) was not detected, evidence of indirect PCV impact was observed among vaccine-type-specific IPD cases.

Maternal and perinatal health research during emerging and ongoing epidemic threats: a landscape analysis and expert consultation.

INTRODUCTION: Pregnant women and their offspring are often at increased direct and indirect risks of adverse outcomes during epidemics and pandemics. A coordinated research response is paramount to ensure that this group is offered at least the same level of disease prevention, diagnosis, and care as the general population. We conducted a landscape analysis and held expert consultations to identify research efforts relevant to pregnant women affected by disease outbreaks, highlight gaps and challenges, and propose solutions to addressing them in a coordinated manner. METHODS: Literature searches were conducted from 1 January 2015 to 22 March 2022 using Web of Science, Google Scholar and PubMed augmented by key informant interviews. Findings were reviewed and Quid analysis was performed to identify clusters and connectors across research networks followed by two expert consultations. These formed the basis for the development of an operational framework for maternal and perinatal research during epidemics. RESULTS: Ninety-four relevant research efforts were identified. Although well suited to generating epidemiological data, the entire infrastructure to support a robust research response remains insufficient, particularly for use of medical products in pregnancy. Limitations in global governance, coordination, funding and data-gathering systems have slowed down research responses. CONCLUSION: Leveraging current research efforts while engaging multinational and regional networks may be the most effective way to scale up maternal and perinatal research preparedness and response. The findings of this landscape analysis and proposed operational framework will pave the way for developing a roadmap to guide coordination efforts, facilitate collaboration and ultimately promote rapid access to countermeasures and clinical care for pregnant women and their offspring in future epidemics.

Dynamic transmission modeling of COVID-19 to support decision-making in Brazil: A scoping review in the pre-vaccine era.

Brazil was one of the countries most affected during the first year of the COVID-19 pandemic, in a pre-vaccine era, and mathematical and statistical models were used in decision-making and public policies to mitigate and suppress SARS-CoV-2 dispersion. In this article, we intend to overview the modeling for COVID-19 in Brazil, focusing on the first 18 months of the pandemic. We conducted a scoping review and searched for studies on infectious disease modeling methods in peer-reviewed journals and gray literature, published between January 01, 2020, and June 2, 2021, reporting real-world or scenario-based COVID-19 modeling for Brazil. We included 81 studies, most corresponding to published articles produced in Brazilian institutions. The models were dynamic and deterministic in the majority. The predominant model type was compartmental, but other models were also found. The main modeling objectives were to analyze epidemiological scenarios (testing interventions' effectiveness) and to project short and long-term predictions, while few articles performed economic impact analysis. Estimations of the R0 and transmission rates or projections regarding the course of the epidemic figured as major, especially at the beginning of the crisis. However, several other outputs were forecasted, such as the isolation/quarantine effect on transmission, hospital facilities required, secondary cases caused by infected children, and the economic effects of the pandemic. This study reveals numerous articles with shared objectives and similar methods and data sources. We observed a deficiency in addressing social inequities in the Brazilian context within the utilized models, which may also be expected in several low- and middle-income countries with significant social disparities. We conclude that the models were of great relevance in the pandemic scenario of COVID-19. Nevertheless, efforts could be better planned and executed with improved institutional organization, dialogue among research groups, increased interaction between modelers and epidemiologists, and establishment of a sustainable cooperation network.

Equity throughout the life course and the evolving role of the Pan American Health Organization.

The objective of this article is to summarize the evolution of the regional commitments of the Pan American Health Organization (PAHO) on health promotion and strategies to improve the health and well-being of women, children, adolescents, and older persons. PAHO regional strategies approved by Member States in the last 20 years are used as the main source of information. The article presents the challenges of making health promotion a public health strategy widely applied in the Region of the Americas and the efforts to renew Member States' collective actions. The article also describes current PAHO efforts to include the positive aspects of health (i.e., well-being, optimal development, and functional ability) and the life course approach as opportunities to advance equity. The article reflects on immunization as a public good and the urgency to address the current challenges as a core element of the regional efforts to transform health systems after more than two years of the COVID-19 pandemic.

El objetivo de este artículo es resumir la evolución de los compromisos regionales de la Organización Panamericana de la Salud (OPS) en materia de promoción de la salud y estrategias para mejorar la salud y el bienestar de mujeres, niños y niñas, adolescentes y personas mayores. Se han empleado como principal fuente de información las estrategias regionales de la OPS aprobadas por los Estados Miembros en los últimos 20 años. En el artículo se presentan los desafíos de convertir la promoción de la salud en una estrategia de salud pública de amplia ejecución en la Región de las Américas y los esfuerzos para renovar las medidas colectivas de los Estados Miembros. Asimismo, se describe la labor actual de la OPS para incluir los aspectos positivos de la salud (como el bienestar, el desarrollo óptimo y la capacidad funcional) y el enfoque del curso de vida como oportunidades para fomentar la equidad. Finalmente, se reflexiona sobre la inmunización como bien público y la urgencia de abordar los desafíos actuales como elemento central de los esfuerzos regionales para transformar los sistemas de salud tras más de dos años de pandemia de COVID-19.

O objetivo deste artigo é resumir a evolução dos compromissos regionais da Organização Pan-Americana da Saúde (OPAS) relativos à promoção da saúde e estratégias para melhorar a saúde e o bem-estar de mulheres, crianças, adolescentes e pessoas idosas. As estratégias regionais da OPAS aprovadas pelos Estados Membros nos últimos 20 anos são a principal fonte de informação. O artigo apresenta os desafios enfrentados para fazer da promoção da saúde uma estratégia de saúde pública amplamente aplicada na Região das Américas e os esforços para renovar as ações coletivas dos Estados Membros. O artigo também descreve os atuais esforços da OPAS para incluir os aspectos positivos da saúde (isto é, bem-estar, desenvolvimento ideal e habilidade funcional) e a abordagem de curso da vida como oportunidades para promover a equidade. O artigo faz reflexões sobre a imunização como um bem público e a urgência de abordar os desafios atuais como um elemento central dos esforços regionais para transformar os sistemas de saúde após mais de dois anos da pandemia de COVID-19.

The effectiveness of COVID-19 vaccines in Latin America, 2021: a multicenter regional case-control study.

Background: As of September 2022, nearly 1.3 billion doses of COVID-19 vaccine products have been administered in Latin America and the Caribbean, where 27% of global COVID-19 deaths have occurred. This study aimed to estimate the effectiveness of COVID-19 vaccines against lab-confirmed COVID-19 related hospitalizations and deaths among adults in Argentina, Brazil, Chile, and Colombia. Methods: Using a test-negative case control design, we evaluated the effectiveness of a primary vaccination series considering six COVID-19 vaccine products (Sputnik V, mRNA-1273, CoronaVac, ChAdOx1, BNT162b2, Ad26.COV2.S) against lab-confirmed COVID-19 hospitalizations and deaths among 83,708 hospitalized adults from February-December, 2021. Data from hospitalization records, COVID surveillance, and vaccination registries were used. Vaccine effectiveness was estimated using logistic regression ((1-OR) x 100). Findings: The average age of participants was 56.7 (SD = 17.5), and 45,894 (54.8%) were male. Adjusted VE (aVE) estimates for full vaccination against hospitalization were 82% for mRNA-1273 (95% confidence interval (CI) = -30 to 98%), 76% (71%-81%) for BNT162b2, 65% (61-68%) for ChAdOx1, 57% (10-79%) for Sputnik V, 53% (50-56%) for CoronaVac, and 46% (23-62%) for Ad26.COV2.S. Estimates, particularly for CoronaVac, varied by variant. Decreasing aVE was estimated as age increased, particularly for CoronaVac and ChAdOx1. aVE estimates against death were generally higher, with 100% (CI not estimated) for mRNA-1273, 82% (69-90%) for BNT162b2, 73% (69-77%) for ChAdOx1, 65% (60-67%) for CoronaVac, 38% (-75 to 78%) for Sputnik V, 6% (-58 to 44%) for Ad26.COV2.S. Interpretation: Primary series vaccination with available COVID-19 vaccine products was effective against COVID-19 hospitalization and mortality. Effectiveness varied by product and declined with increasing age. Funding: This study was funded by the Pan-American Health Organization (PAHO, World Health Organization (WHO)). PAHO convened and led the study implementation.

Equity throughout the life course and the evolving role of the Pan American Health Organization

[ABSTRACT]. The objective of this article is to summarize the evolution of the regional commitments of the Pan Ameri- can Health Organization (PAHO) on health promotion and strategies to improve the health and well-being of women, children, adolescents, and older persons. PAHO regional strategies approved by Member States in the last 20 years are used as the main source of information. The article presents the challenges of making health promotion a public health strategy widely applied in the Region of the Americas and the efforts to renew Member States’ collective actions. The article also describes current PAHO efforts to include the positive aspects of health (i.e., well-being, optimal development, and functional ability) and the life course approach as opportunities to advance equity. The article reflects on immunization as a public good and the urgency to address the current challenges as a core element of the regional efforts to transform health systems after more than two years of the COVID-19 pandemic.

[RESUMEN]. El objetivo de este artículo es resumir la evolución de los compromisos regionales de la Organización Pan- americana de la Salud (OPS) en materia de promoción de la salud y estrategias para mejorar la salud y el bienestar de mujeres, niños y niñas, adolescentes y personas mayores. Se han empleado como principal fuente de información las estrategias regionales de la OPS aprobadas por los Estados Miembros en los últi- mos 20 años. En el artículo se presentan los desafíos de convertir la promoción de la salud en una estrategia de salud pública de amplia ejecución en la Región de las Américas y los esfuerzos para renovar las medidas colectivas de los Estados Miembros. Asimismo, se describe la labor actual de la OPS para incluir los aspectos positivos de la salud (como el bienestar, el desarrollo óptimo y la capacidad funcional) y el enfoque del curso de vida como oportunidades para fomentar la equidad. Finalmente, se reflexiona sobre la inmunización como bien público y la urgencia de abordar los desafíos actuales como elemento central de los esfuerzos regio- nales para transformar los sistemas de salud tras más de dos años de pandemia de COVID-19.

[RESUMO]. O objetivo deste artigo é resumir a evolução dos compromissos regionais da Organização Pan-Americana da Saúde (OPAS) relativos à promoção da saúde e estratégias para melhorar a saúde e o bem-estar de mulheres, crianças, adolescentes e pessoas idosas. As estratégias regionais da OPAS aprovadas pelos Estados Membros nos últimos 20 anos são a principal fonte de informação. O artigo apresenta os desafios enfrentados para fazer da promoção da saúde uma estratégia de saúde pública amplamente aplicada na Região das Américas e os esforços para renovar as ações coletivas dos Estados Membros. O artigo também descreve os atuais esforços da OPAS para incluir os aspectos positivos da saúde (isto é, bem-estar, desenvolvimento ideal e habilidade funcional) e a abordagem de curso da vida como oportunidades para promover a equidade. O artigo faz reflexões sobre a imunização como um bem público e a urgência de abordar os desafios atuais como um elemento central dos esforços regionais para transformar os sistemas de saúde após mais de dois anos da pandemia de COVID-19.

Modeling the impact of child vaccination (5-11 y) on overall COVID-19 related hospitalizations and mortality in a context of omicron variant predominance and different vaccination coverage paces in Brazil.

Background: Developing countries have experienced significant COVID-19 disease burden. With the emergence of new variants, particularly omicron, the disease burden in children has increased. When the first COVID-19 vaccine was approved for use in children aged 5-11 years of age, very few countries recommended vaccination due to limited risk-benefit evidence for vaccination of this population. In Brazil, ranking second in the global COVID-19 death toll, the childhood COVID-19 disease burden increased significantly in early 2022. This prompted a risk-benefit assessment of the introduction and scaling-up of COVID-19 vaccination of children. Methods: To estimate the potential impact of vaccinating children aged 5-11 years with mRNA-based COVID-19 vaccine in the context of omicron dominance, we developed a discrete-time SEIR-like model stratified in age groups, considering a three-month time horizon. We considered three scenarios: No vaccination, slow, and maximum vaccination paces. In each scenario, we estimated the potential reduction in total COVID-19 cases, hospitalizations, deaths, hospitalization costs, and potential years of life lost, considering the absence of vaccination as the base-case scenario. Findings: We estimated that vaccinating at a maximum pace could prevent, between mid-January and April 2022, about 26,000 COVID-19 hospitalizations, and 4200 deaths in all age groups; of which 5400 hospitalizations and 410 deaths in children aged 5-11 years. Continuing vaccination at a slow/current pace would prevent 1450 deaths and 9700 COVID-19 hospitalizations in all age groups in this same time period; of which 180 deaths and 2390 hospitalizations in children only. Interpretation: Maximum vaccination of children results in a significant reduction of COVID-19 hospitalizations and deaths and should be enforced in developing countries with significant disease incidence in children. Funding: This manuscript was funded by the Brazilian Council for Scientific and Technology Development (CNPq - Process # 402834/2020-8).

Equity throughout the life course and the evolving role of the Pan American Health Organization / Equidad a lo largo del curso de vida y la evolución del papel de la Organización Panamericana de la Salud / Equidade ao longo da vida e a evolução do papel da Organização Pan-Americana da Saúde

ABSTRACT The objective of this article is to summarize the evolution of the regional commitments of the Pan American Health Organization (PAHO) on health promotion and strategies to improve the health and well-being of women, children, adolescents, and older persons. PAHO regional strategies approved by Member States in the last 20 years are used as the main source of information. The article presents the challenges of making health promotion a public health strategy widely applied in the Region of the Americas and the efforts to renew Member States' collective actions. The article also describes current PAHO efforts to include the positive aspects of health (i.e., well-being, optimal development, and functional ability) and the life course approach as opportunities to advance equity. The article reflects on immunization as a public good and the urgency to address the current challenges as a core element of the regional efforts to transform health systems after more than two years of the COVID-19 pandemic.

RESUMEN El objetivo de este artículo es resumir la evolución de los compromisos regionales de la Organización Panamericana de la Salud (OPS) en materia de promoción de la salud y estrategias para mejorar la salud y el bienestar de mujeres, niños y niñas, adolescentes y personas mayores. Se han empleado como principal fuente de información las estrategias regionales de la OPS aprobadas por los Estados Miembros en los últimos 20 años. En el artículo se presentan los desafíos de convertir la promoción de la salud en una estrategia de salud pública de amplia ejecución en la Región de las Américas y los esfuerzos para renovar las medidas colectivas de los Estados Miembros. Asimismo, se describe la labor actual de la OPS para incluir los aspectos positivos de la salud (como el bienestar, el desarrollo óptimo y la capacidad funcional) y el enfoque del curso de vida como oportunidades para fomentar la equidad. Finalmente, se reflexiona sobre la inmunización como bien público y la urgencia de abordar los desafíos actuales como elemento central de los esfuerzos regionales para transformar los sistemas de salud tras más de dos años de pandemia de COVID-19.

RESUMO O objetivo deste artigo é resumir a evolução dos compromissos regionais da Organização Pan-Americana da Saúde (OPAS) relativos à promoção da saúde e estratégias para melhorar a saúde e o bem-estar de mulheres, crianças, adolescentes e pessoas idosas. As estratégias regionais da OPAS aprovadas pelos Estados Membros nos últimos 20 anos são a principal fonte de informação. O artigo apresenta os desafios enfrentados para fazer da promoção da saúde uma estratégia de saúde pública amplamente aplicada na Região das Américas e os esforços para renovar as ações coletivas dos Estados Membros. O artigo também descreve os atuais esforços da OPAS para incluir os aspectos positivos da saúde (isto é, bem-estar, desenvolvimento ideal e habilidade funcional) e a abordagem de curso da vida como oportunidades para promover a equidade. O artigo faz reflexões sobre a imunização como um bem público e a urgência de abordar os desafios atuais como um elemento central dos esforços regionais para transformar os sistemas de saúde após mais de dois anos da pandemia de COVID-19.

Modelling the impact of school reopening and contact tracing strategies on Covid-19 dynamics in different epidemiologic settings in Brazil.

We simulate the impact of school reopening during the COVID-19 pandemic in three major urban centers in Brazil to identify the epidemiological indicators and the best timing for the return of in-school activities and the effect of contact tracing as a mitigation measure. Our goal is to offer guidelines for evidence-based policymaking. We implement an extended SEIR model stratified by age and considering contact networks in different settings - school, home, work, and community, in which the infection transmission rate is affected by various intervention measures. After fitting epidemiological and demographic data, we simulate scenarios with increasing school transmission due to school reopening, and also estimate the number of hospitalization and deaths averted by the implementation of contact tracing. Reopening schools results in a non-linear increase in reported COVID-19 cases and deaths, which is highly dependent on infection and disease incidence at the time of reopening. When contact tracing and quarantining are restricted to school and home settings, a large number of daily tests is required to produce significant effects in reducing the total number of hospitalizations and deaths. Policymakers should carefully consider the epidemiological context and timing regarding the implementation of school closure and return of in-person school activities. While contact tracing strategies prevent new infections within school environments, they alone are not sufficient to avoid significant impacts on community transmission.

Modelling optimal vaccination strategies against COVID-19 in a context of Gamma variant predominance in Brazil.

INTRODUCTION: Brazil experienced moments of collapse in its health system throughout 2021, driven by the emergence of variants of concern (VOC) combined with an inefficient initial vaccination strategy against Covid-19. OBJECTIVES: To support decision-makers in formulating COVID-19 immunization policy in the context of limited vaccine availability and evolving variants over time, we evaluate optimal strategies for Covid-19 vaccination in Brazil in 2021, when vaccination was rolled out during Gamma variant predominance. METHODS: Using a discrete-time epidemic model we estimate Covid-19 deaths averted, considering the currently Covid-19 vaccine products and doses available in Brazil; vaccine coverage by target population; and vaccine effectiveness estimates. We evaluated a 5-month time horizon, from early August to the end of December 2021. Optimal vaccination strategies compared the outcomes in terms of averted deaths when varying dose intervals from 8 to 12 weeks, and choosing the minimum coverage levels per age group required prior to expanding vaccination to younger target populations. We also estimated dose availability required over time to allow the implementation of optimal strategies. RESULTS: To maximize the number of averted deaths, vaccine coverage of at least 80 % should be reached in older age groups before starting vaccination into subsequent younger age groups. When evaluating varying dose intervals for AZD1222, reducing the dose interval from 12 to 8 weeks for the primary schedule would result in fewer COVID-19 deaths, but this can only be implemented if accompanied by an increase in vaccine supply of at least 50 % over the coming six-months in Brazil. CONCLUSION: Covid-19 immunization strategies should be tailored to local vaccine product availability and supply over time, circulating variants of concern, and vaccine coverage in target population groups. Modelling can provide valuable and timely evidence to support the implementation of vaccination strategies considering the local context, yet following international and regional technical evidence-based guidance.

Effect Of Nonpharmaceutical Interventions On COVID-19 Cases And Deaths In Brazil.

Lacking national direction, in 2020 Brazilian states adopted a variety of nonpharmaceutical interventions to combat COVID-19, adjusting their stringency over time. We took advantage of this variation across states and over time to estimate the independent effect of seven interventions on the growth rate ratios of COVID-19 cases and deaths. Panel regressions using daily data from March to December 2020 for twelve states show that two interventions, suspension of public events and masking mandates, significantly reduced the spread of the disease. Partial and full suspension of public events were equally effective. Full masking mandates were more effective than partial ones. Together, suspension of public events and full masking mandates reduced the growth rate ratios of both cases and deaths almost to 1, the point at which cases and deaths are no longer increasing. Policy makers may find this analysis useful as they aim to choose the most effective nonpharmaceutical interventions to reduce COVID-19's social and economic burdens.

Effectiveness of Pneumococcal Vaccines on Otitis Media in Children: A Systematic Review.

OBJECTIVES: We aimed to determine the effectiveness of pneumococcal vaccines on otitis media (OM) and acute otitis media (AOM) in children. METHODS: We conducted a systematic search in databases PubMed (MEDLINE), Embase, Lilacs, and Web of Science. We included observational studies that evaluated any pneumococcal vaccine - including 7, 10, and 13-valent pneumococcal conjugate vaccines (PCV7, PCV10, and PCV13) and 23-valent polysaccharide vaccines (PPSV23) as the intervention, in children aged less than five years. RESULTS: Out of the 2112 screened studies, 48 observational studies complied with the eligibility criteria and therefore were included in this review. Of the included studies, 30 (63%) were before-after, eleven (23%) cohort, six (13%) time series, and one (2%) case-control study designs. Vaccine effectiveness (VE) in preventing OM or AOM varied by vaccine type. In children under 24 months VE ranged from 8% and 42.7% (PCV7), 5.6% to 84% (PCV10) and 2.2% to 68% (PCV13). In children aged less than 60 months, VE ranged between 13.2% and 39% for PCV7, 11% to 39% for PCV10 (only children under 48 months), and 39% to 41% (PCV13). CONCLUSIONS: Our results demonstrate significant effect of pneumococcal vaccination in decreasing OM or AOM in children under five years old in several countries supporting the public health value of introducing PCVs in national immunization programs.

Accuracy of rapid point-of-care serological tests for leprosy diagnosis: a systematic review and meta-analysis.

BACKGROUND: Leprosy is a chronic infectious disease, still endemic in many countries that may lead to neurological, ophthalmic, and motor sequelae if not treated early. Access to timely diagnosis and multidrug therapy (MDT) remains a crucial element in the World Health Organization's strategy to eliminate the disease as a public health problem. OBJECTIVES: This systematic review aims to evaluate the accuracy of rapid point-of-care (POC) tests for diagnosis of leprosy. METHODS: Searches were carried out in electronic databases (PubMed, EMBASE, CRD, Cochrane Library and LILACS) in April 2021 for patients with suspicion or confirmatory diagnostic of leprosy, classified in multibacillary (MB) or paucibacillary (PB) cases, performing rapid POC serological tests compared to clinical evaluation, smear microscopy and immunohistochemistry analysis. Methodological quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies tool (QUADAS-2). A meta-analysis was undertaken to generate pooled estimates of diagnostic parameters, presenting sensitivity, specificity and diagnostic odds ratio (DOR) values. The review protocol was registered at PROSPERO, CRD # 42014009658. FINDINGS: From 893 potentially relevant references, 12 articles were included reporting 16 diagnostic tests accuracy studies with 5395 individuals enrolled. Meta-analysis of NDO-LID and PGL-I tests data in MB patients showed sensitivity and specificity [95% confidence interval (CI)] of 0.83 (0.71-0.91), 0.91 (0.72-0.97); and 0.92 (0.86-0.96), 0.93 (0.78-0.98); respectively, with high heterogeneity among the studies. MAIN CONCLUSIONS: Our results can inform policymakers regarding the possibility of implementing accurate, rapid POC tests for leprosy in public health services, especially within primary health care.

Effects of non-pharmaceutical interventions on social distancing during the COVID-19 pandemic: Evidence from the 27 Brazilian states.

BACKGROUND: Despite substantial evidence on the effectiveness of non-pharmaceutical interventions (NPIs), there is still limited evidence on the individual effects of different types of NPIs on social distancing, especially in low- and middle-income countries. METHODS: We used panel data analysis to evaluate the effects of mandatory social distancing rules on social distancing. We obtained data on six different categories of mandatory restrictions implemented in Brazil, by date and state, from state government gazettes (diários oficiais). We then defined a social distancing rules index (SDI) to measure the strictness of social distancing rules, assigning each a value of 2, 1, or 0 depending on whether restrictions were full, partial, or very limited/non-existent at every given time. A separate variable was defined for masking mandates. We tested whether the following variables were associated to social distancing: SDI, masking mandates, COVID-19 incidence, population socioeconomic status, and political orientation. Data is for each day between March 11th and November 10th, 2020 in the 27 Brazilian states (N = 6615). FINDINGS: Social distancing increased when social distancing rules were stricter, and decreased when the use of face masks became mandatory. The effects of different types of restrictions varied: suspending in-person classes and gatherings, religious/sport/cultural activities had a greater effect than other types of restrictions. Also, the effect of social distancing rules on people's behaviour decreased over time, especially when rules were stricter. INTERPRETATION: Mandatory social distancing rules must be adopted to increase social distancing. Stricter rules have a higher impact, but result in decreased compliance over time. Policymakers should prioritize more targeted policies.

Accuracy of rapid point-of-care serological tests for leprosy diagnosis: a systematic review and meta-analysis

BACKGROUND Leprosy is a chronic infectious disease, still endemic in many countries that may lead to neurological, ophthalmic, and motor sequelae if not treated early. Access to timely diagnosis and multidrug therapy (MDT) remains a crucial element in the World Health Organization's strategy to eliminate the disease as a public health problem. OBJECTIVES This systematic review aims to evaluate the accuracy of rapid point-of-care (POC) tests for diagnosis of leprosy. METHODS Searches were carried out in electronic databases (PubMed, EMBASE, CRD, Cochrane Library and LILACS) in April 2021 for patients with suspicion or confirmatory diagnostic of leprosy, classified in multibacillary (MB) or paucibacillary (PB) cases, performing rapid POC serological tests compared to clinical evaluation, smear microscopy and immunohistochemistry analysis. Methodological quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies tool (QUADAS-2). A meta-analysis was undertaken to generate pooled estimates of diagnostic parameters, presenting sensitivity, specificity and diagnostic odds ratio (DOR) values. The review protocol was registered at PROSPERO, CRD # 42014009658. FINDINGS From 893 potentially relevant references, 12 articles were included reporting 16 diagnostic tests accuracy studies with 5395 individuals enrolled. Meta-analysis of NDO-LID and PGL-I tests data in MB patients showed sensitivity and specificity [95% confidence interval (CI)] of 0.83 (0.71-0.91), 0.91 (0.72-0.97); and 0.92 (0.86-0.96), 0.93 (0.78-0.98); respectively, with high heterogeneity among the studies. MAIN CONCLUSIONS Our results can inform policymakers regarding the possibility of implementing accurate, rapid POC tests for leprosy in public health services, especially within primary health care.

Implementation and results of a gastrointestinal cancer screening program in an Amazon rainforest village: A descriptive study.

Background and study aims Gastrointestinal cancer is an important cause of death worldwide. Remote populations are especially vulnerable to these conditions due to reduced access to screening and adequate treatment. In this context, the Belterra project was designed as a pilot taskforce to deliver gastrointestinal screening to an underserved Amazonian population and to spread knowledge and practice to local health workers. This study aimed to describe the implementation and present the results of the Belterra Project. Patients and methods The project took place between October 2014 and December 2017 in Belterra, Pará, Brazil. Public-private partnerships were obtained and were essential for funding. The project required complex logistic solutions to provide gastrointestinal screening to every inhabitant between 50 and 70 years of age, including medical equipment and personal transportation to a remote area. Subjects were asked about their medical history, and received a physical examination, endoscopic examinations, and stool tests. Results Over the course of 19 expeditions, we screened 2,022 inhabitants of Belterra, aged 50 to 70 years. Five colorectal and six gastric adenocarcinomas were diagnosed, as were several lower-stage lesions. Overall, 26 % of the participants undergoing colonoscopy showed some type of colonic lesion. Conclusions Notwithstanding the geographical, cultural, and financial barriers, this study suggests that the implementation of a gastrointestinal cancer screening program for remote Brazilian populations is feasible, reaching high adherence. Although logistics is very demanding, such campaigns may be a good strategy to provide mass gastrointestinal cancer screening for underserved populations.

Assessment of the implementation of a nurse-initiated pain management protocol in the emergency department.

OBJECTIVES: to assess the implementation of a nurse-initiated pain management protocol for patients triaged as semi-urgent, and its impact in pain intensity, in the Emergency Department. METHODS: a prospective cohort study for adult patients with pain who had been triaged as semi-urgent and admitted to the hospital's Emergency Department. Patients who received the intervention (pain-management protocol with analgesic administration) were compared to those who were managed using the conventional approach (physician evaluation prior to analgesic administration). RESULTS: of the 185 patients included, 55 (30%) received the intervention, and 130 (70%) were managed conventionally. Patients in the intervention group were more likely to have taken pain medication in the 4 hours prior to admission, and reported higher levels of pain at admission and more significant reductions in pain level. CONCLUSIONS: despite low protocol adherence, the intervention resulted in higher reported pain relief.

Declines in Pneumonia Mortality Following the Introduction of Pneumococcal Conjugate Vaccines in Latin American and Caribbean Countries.

BACKGROUND: Pneumococcal conjugate vaccines (PCVs) are recommended for use in pediatric immunization programs worldwide. Few data are available on their effect against mortality. We present a multicountry evaluation of the population-level impact of PCVs against death due to pneumonia in children < 5 years of age. METHODS: We obtained national-level mortality data between 2000 and 2016 from 10 Latin American and Caribbean countries, using the standardized protocol. Time series models were used to evaluate the decline in all-cause pneumonia deaths during the postvaccination period while controlling for unrelated temporal trends using control causes of death. RESULTS: The estimated declines in pneumonia mortality following the introduction of PCVs ranged from 11% to 35% among children aged 2-59 months in 5 countries: Colombia (24% [95% credible interval {CrI}, 3%-35%]), Ecuador (25% [95% CrI, 4%-41%]), Mexico (11% [95% CrI, 3%-18%]), Nicaragua (19% [95% CrI, 0-34%]), and Peru (35% [95% CrI, 20%-47%]). In Argentina, Brazil, and the Dominican Republic, the declines were not detected in the aggregated age group but were detected in certain age strata. In Guyana and Honduras, the estimates had large uncertainty, and no declines were detected. Across the 10 countries, most of which have low to moderate incidence of pneumonia mortality, PCVs have prevented nearly 4500 all-cause pneumonia deaths in children 2-59 months since introduction. CONCLUSIONS: Although the data quality was variable between countries, and the patterns varied across countries and age groups, the balance of evidence suggests that mortality due to all-cause pneumonia in children declined after PCV introduction. The impact could be greater in populations with a higher prevaccine burden of pneumonia.