Preventive Strategies and Determinants of Vaccination Compliance Among Older Adults in Rural Amazonian Communities.

Only 3.50% of participants had received all four respiratory vaccines.

Higher educational attainment, multimorbidity, social frailty, greater muscle mass, better physical performance, and healthcare center attendance were associated with higher vaccination uptake.

Depressive symptoms, cognitive impairment, functional dependency, physical frailty, dynapenia, and higher body mass index were associated with lower vaccination uptake.