Comorbid risk, respondent characteristics and likelihood of pneumococcal vaccination versus no vaccination among older adults in Brazil

Abstract

This study investigated predictors of pneumococcal polysaccharide vaccine (PPV) use among older adults in Brazil. Respondents aged ≥50 from 2011 National Health and Wellness Survey in Brazil who had ever (vs never) received PPV were compared on comorbid risk, sociodemographics and vaccination behaviors. Logistic regression and decision tree analyses predicted PPV receipt as a function of the measures. Among 3195 respondents, 8.7% reported ever receiving PPV (10.4% among those at risk). Adjusting for covariates, adults classified as high or moderate risk had significantly greater odds of pneumococcal vaccination (odds ratios [ORs]: 2.42 or 1.36, respectively), as were those who received flu vaccinations (OR: 2.21) or were parents/guardians of a vaccinated child (OR: 6.48). In Brazil, child vaccination appears to be the dominant predictor of adult PPV uptake, followed by influenza vaccination. Higher disease risk was a significant predictor, but most older at-risk adults (89.6%) did not receive PPV.

Keywords::

• adult vaccination
• child vaccination
• flu vaccination
• pneumococcal vaccine
• risk factors

Financial & competing interests disclosure

C Roberts is an employee of Pfizer Inc., which provided funding for the study and its publication. A Goren and TW Victor are employees of Kantar Health, which conducted the National Health and Wellness Survey and which analyzed the data on behalf of, and with funding from, Pfizer Inc., including funding for manuscript publication. All authors contributed to the study design, interpretation of results and review and approval of the final manuscript. The authors would like to acknowledge EJ Philip, who provided support with literature review and manuscript editing on behalf of Kantar Health, with funding from Pfizer Inc. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.

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