Prevention of community-acquired pneumonia among a cohort of hospitalized elderly: Benefit due to influenza and pneumococcal vaccination not demonstrated

Abstract

Benefits from influenza and 23-valent pneumococcal polysaccharide (23vPPV) vaccines against invasive pneumococcal disease and laboratory confirmed influenza have been well documented. However, their effectiveness against pneumonia remains controversial for community-based elderly ≥65 years. Using a case-cohort design we examined incremental VE of 23vPPV over and above influenza vaccine against hospitalization with community-acquired pneumonia (HCAP) in two large Australian hospitals. 1952 cases (ICD-10-AM codes for pneumonia: J10-J18) and 2927 randomly selected cohort subjects were studied. Vaccination status was confirmed by providers. Benefit against HCAP was not demonstrated in multivaria..