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Influenza vaccination among elderly in Pelotas-RS, Brazil, 2014: a population-based study* * Article based on the Master's thesis in Epidemiology entitled 'Influenza vaccination among elderly in Pelotas, RS: a population-based study', defended by Rosália Garcia Neves at the Programme of Post-graduation in Epidemiology of the Federal University of Pelotas, in 2014. The research received support from the Program of Academic Excellence (PROEX) of the Coordination for the Improvement of Higher Education Personnel (Capes)/ Ministry of Education and from the Research Support Foundation of Rio Grande do Sul State (FAPERGS).

Abstract

OBJECTIVE:

to describe the prevalence of individuals vaccinated against influenza and associated factors with vaccination among elderly; identify reasons for noncompliance and adverse events.

METHODS:

this was a cross-sectional study, conducted in the urban area of Pelotas-RS, Brazil, in 2014.

RESULTS:

out of 1,451 elderly, 71% got vaccinated; the highest prevalences were observed in the elderly with better economic status (PR=1.2 - 95%CI 1.1;1.4), those who were not employed (PR=1.2 - 95%CI 1.1;1.3), those who were physically active (PR=1.1 - 95%CI 1.0;1.2), former smokers (PR=1.3 - 95%CI 1.1;1.5), those who were assisted by a health professional the previous year (PR=1.2 - 95%CI 1.1;1.4) and those who reported two or more health problems (PR=1.2 - 95%CI 1.1;1.4); the main reason for noncompliance (n=414) was 'did not want/do not like' (45%); the most frequently reported adverse events were malaise (49/83) and muscle ache (30/83).

CONCLUSION:

vaccination coverage was not universal; educational approaches are needed to clarify controversy on the efficacy, adverse events and benefits of vaccination.

Key words:
Influenza Vaccines; Aged; Cross-Sectional Studies; Immunization; Mass Vaccination

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