Measles, mumps and rubella vaccination coverage in capitals and interior region municipalities of Northeast Brazil: a household survey in a cohort of children born in 2017 and 2018.

Objective: To analyze measles, mumps, and rubella vaccination coverage among children up to 24 months old and factors associated with non-vaccination in a 2017-2018 live birth cohort, in state capitals and large interior region cities in Northeast Brazil.

Methods: Population-based survey analyzing vaccination coverage and sociodemographic factors through logistic regression.

Results: For 12,137 children, vaccination coverage was 79.

Vaccination coverage, hesitancy and associated factors: a household survey of a cohort of children born in 2017 and 2018 in urban areas of state capital cities in the Brazilian Northeast.

Objective: To estimate vaccination coverage and analyze sociodemographic factors associated with non-vaccination in children born in 2017 and 2018 in the state capitals of Northeast Brazil.

Methods: A household survey using cluster sampling was conducted from 2020-2022 to estimate vaccination coverage and hesitancy. Factors associated with non-vaccination were analyzed using logistic regression to calculate Odds Ratios (OR) and their Confidence Intervals (95%CI).

Methods to evaluate COVID-19 vaccine effectiveness, with an emphasis on quasi-experimental approaches.

The evaluation of vaccine effectiveness is conducted with real-world data. They are essential to monitor the performance of vaccination programmes over time, and in the context of the emergence of new variants. Until now, the effectiveness of COVID-19 vaccines has been assessed based on classic methods, such as cohort and test-negative case-control studies, which may often not allow for adequate control of inherent biases in the assignment of vaccination campaigns.

[Yersinia pestis infection in the State of Bahia: effective control or epidemiological silence?].

Introduction: From an epidemiological point of view, the plague is still being considered of great importance, because of its high epidemic potential. Despite the absence of cases of human plague in Brazil, its etiologic agent, the bacteria Yersinia pestis, is still deep rooted in its natural environment. The occurrence of positive serology for plague in domestic carnivores in plague areas in Bahia in the past few years implies the need for a more rigorous evaluation in order to verify whether the bacillus of the plague is still active in these areas.