ArticleEpidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil2026
Monitoring influenza vaccination coverage among older adults: a rural cohort study, Rio Grande, 2017-2022.
Article in Epidemiologia e servicos de saude : revista do Sistema Unico de Saude do Brasil, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesTo estimate influenza vaccination coverage in older adults from the municipality of Rio Grande rural cohort, Rio Grande do Sul state, Brazil, using baseline data from 2017 and follow-up data from 2018-2019 and 2020-2022, and to identify factors associated with vaccination uptake during these periods.
methodsThis was a cohort study, based on part of the EpiRural Rio Grande project, conducted at three points in time: baseline in 2017 and follow-up in 2018-2019 and 2020-2022. A total of 651 participants aged 60 years or older were included in all waves. Vaccination information was self-reported. Vaccination coverage proportions (%) were estimated at each follow-up point. Analysis of factors associated with vaccination used hierarchical ordinal logistic regression to estimate odds ratios (OR) with 95% confidence intervals (95%CI).
resultsInfluenza vaccination coverage increased from 71.5% at baseline to 85.7% in 2020-2022. In the adjusted analysis, the highest odds of vaccination was associated with not working (OR 1.93; 95%CI 1.24; 2.99), not smoking (OR 2.44; 95%CI 1.45; 4.12), being a former smoker (OR 2.71; 95% CI 1.61; 4.59), diagnosis of pulmonary emphysema (OR 1.85; 95%CI 1.04; 3.28), using long-term medication (OR 1.62; 95%CI 1.06; 2.40), and seeking care at a primary health care center in the last year (OR 2.55; 95%CI 1.82; 3.63).
conclusionInfluenza vaccination coverage increased over time, although below the national target, and was higher among participants linked to health services and with chronic conditions.
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