[Microplanning as a tool to strengthen the National Immunization Program in BrazilLa microplanificación como herramienta para fortalecer el Programa Nacional de Inmunizaciones en Brasil].

Objective: To measure the variation in number of doses, vaccination coverage (VC) of administered vaccines, and number of municipalities that achieved the VC target in Brazil with the implementation of microplanning for high-quality vaccination activities (HQVA) and decentralized multivaccination actions.

Methods: This quasi-experimental study used data from the National Live Birth Information System, the National Immunization Program Information System, and the National Health Data Network. The number of doses of hepatitis A (HA), meningococcal conjugate-C, oral poliomyelitis, 10-valent pneumococcal, diphtheria-tetanus-pertussis (DTP), and measles-mumps-rubella (MMR) vaccines administered to children under 2 years of age in 2022 (pre-microplanning) and 2023 (post-microplanning) was estimated.

The emergence of novel SARS-CoV-2 variant P.1 in Amazonas (Brazil) was temporally associated with a change in the age and sex profile of COVID-19 mortality: A population based ecological study.

Background: Since the end of 2020, there has been a great deal of international concern about the variants of SARS-COV-2 B.1.1.

Seroprevalence, spatial dispersion and factors associated with flavivirus and chikungunha infection in a risk area: a population-based seroprevalence study in Brazil.

Background: The State of Ceará, in Northeastern Brazil, suffers from a triple burden of arboviruses (dengue, Zika and chikungunya). We measured the seroprevalence of chikungunya, dengue and Zika and its associated factors in the population of Juazeiro do Norte, Southern Ceará State, Brazil.

Methods: A cross-sectional study of analytical and spatial analysis was performed to estimate the seroprevalence of dengue, Zika and chikungunya, in the year 2018.

Tracking excess deaths associated with the COVID-19 epidemic as an epidemiological surveillance strategy-preliminary results of the evaluation of six Brazilian capitals.

Introduction: In March 2020, the World Health Organization declared the coronavirus disease (COVID-19) outbreak a pandemic. In Brazil, 110 thousand cases and 5,901 deaths were confirmed by the end of April 2020. The scarcity of laboratory resources, the overload on the service network, and the broad clinical spectrum of the disease make it difficult to document all the deaths due to COVID-19.

Health system collapse 45 days after the detection of COVID-19 in Ceará, Northeast Brazil: a preliminary analysis.

Introduction: COVID-19 emerged in late 2019 and quickly became a serious public health problem worldwide. This study aim to describe the epidemiological course of cases and deaths due to COVID-19 and their impact on hospital bed occupancy rates in the first 45 days of the epidemic in the state of Ceará, Northeastern Brazil.

Methods: The study used an ecological design with data gathered from multiple government and health care sources.

A major chikungunya epidemic with high mortality in northeastern Brazil.

Introduction: Chikungunya causes fever and severe and persistent joint pain.

Methods: We reported a chikungunya outbreak that occurred in Ceará State, Brazil between 2016 and 2017 with emphasis on epidemiological characterization of cases, high number of deaths, mortality-associated factors, and spatial and temporal spread of the epidemic among municipalities.

Results: In November 2015, the first autochthonous cases of chikungunya were confirmed in Ceará, Brazil.

Is the recent increment in attributable deaths to type-2 diabetes (T2D) associated with the latest chikungunya outbreak in a major epidemic area in Brazil?

Introduction: Chikungunya virus (CHIKV) can negatively influence outcomes in patients with pre-existing conditions. We investigated the association between the recent CHIKV outbreak and increased type 2 diabetes (T2D)-attributable deaths.

Methods: Monthly averages of T2D-attributable deaths between 2001 and 2016 were determined and compared to the equivalent data for 2017 and the recent CHIKV outbreak.

Vaccination strategies and results for tackling the measles outbreak in Ceará State, Brazil, 2013-2015.

This study describes the experience and results of the vaccination strategies developed for tackling the measles outbreak in Ceará State, Brazil, from December 2013 to September 2015. Strategies of routine vaccination, community immunity, and vaccination campaigns were conducted, along with searching of unvaccinated people, through rapid monitoring of immunization coverage and scanning. To describe the results, primary data collected in field activities and secondary data on vaccination in a population aged from six months to 49 years, available at the Information System of the National Immunization Program (IS-NIP), were used.

Risk analysis for the reintroduction and transmission of measles in the post-elimination period in the Americas.

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Measles epidemic in Brazil in the post-elimination period: Coordinated response and containment strategies.

The measles virus circulation was halted in Brazil in 2001 and the country has a routine vaccination coverage against measles, mumps and rubella higher than 95%. In Ceará, the last confirmed case was in 1999. This article describes the strategies adopted and the effectiveness of surveillance and control measures implemented during a measles epidemic in the post-elimination period.

Post-pandemic influenza A (H1N1) 2009 virus infection in pregnant women in Ceará, Brazil.

Objective: The aim of this study was to present results of the post-pandemic phase of A(H1N1)pdm09 virus infection in pregnant women in Ceará, Brazil, during the January-June 2012 influenza season.

Results: One hundred and fifty-four nasopharyngeal swab samples were collected from pregnant women admitted to hospitals with suspected severe acute respiratory infection (SARI). Fifty-three (34·4%) had laboratory-confirmed A(H1N1)pdm09 virus infection with 15 (28·3%) outpatients and 38 (71·7%) hospitalized.

Pandemic influenza A (H1N1) 2009: epidemiological analysis of cases in a tropical/semi-arid region of Brazil.

Introduction: The year 2009 marked the beginning of a pandemic caused by a new variant of influenza A (H1N1). After spreading through North America, the pandemic influenza virus (H1N1) 2009 spread rapidly throughout the world. The aim of this study was to describe the clinical and epidemiological characteristics of cases of pandemic influenza in a tropical/semi-arid region of Brazil.