Influenza vaccination in older adults during the covid-19 pandemic: A population-based study in 133 Brazilian cities

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Abstract

Routine immunization during pandemics can be harmed. This study estimated the influenza vaccination coverage in older adults during the COVID-19 through the EPICOVID-19, a population-based study conducted in 133 cities from the 26 Brazilian states and Federal District. We selected 25 census tracts per city, with probability proportional to the tract’s size, ten households by census tract, and one random individual interviewed. A total of 8,265 older adults (≥60 years old) were interviewed and asked whether they had been vaccinated against flu in 2020. Vaccination coverage was 82.3% (95% CI: 80.1-84.2) with no difference by gender, age, and region; higher vaccination coverage was observed among the wealthiest (84.7% versus 80.1% in the poorest) and among the more educated (87.3% versus 83.2% less educated); lower coverage among indigenous (56.9% versus > 80% among other ethnic groups). A positive association was identified with the number of comorbidities among men but not among women. Most of the population was vaccinated (97.5%) in the public health system. The private network was chosen mainly in the South by the wealthiest and more educated. Vaccination coverage was seven percentage points lower than the government target (90%), and inequalities should be reversed in future campaigns.

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Menezes, A. M. B., Hallal, P. C., Silveira, M. F., Wehrmeister, F. C., Horta, B. L., de Barros, A. J. D., … Victora, C. G. (2021). Influenza vaccination in older adults during the covid-19 pandemic: A population-based study in 133 Brazilian cities. Ciencia e Saude Coletiva, 26(8), 2937–2947. https://doi.org/10.1590/1413-81232021268.09382021

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