Evaluating How the 20-Valent Pneumococcal Vaccine Works to Prevent Pneumonia in Adults 65 and Older Hospitalized with Suspected Pneumonia

What this Trial Is About

Researchers are evaluating how well the 20-valent pneumococcal conjugate vaccine 20vPnC works against pneumonia caused by seven new types of the Streptococcus pneumoniae bacteria. This study focuses on adults aged 65 years and older who are hospitalized with pneumonia confirmed by chest imaging. The study aims to compare the presence of pneumonia caused by these specific bacteria types in people vaccinated with 20vPnC versus those with pneumonia caused by other bacteria or strains. This observational study involves adults 65 years and older hospitalized with radiologically-confirmed community-acquired pneumonia RADCAP. Participants will provide a urine sample for testing pneumococcal bacteria using BinaxNOW and specific urinary antigen detection assays UAD-1 and UAD-2. Cases are identified by detection of the seven additional bacteria types in 20vPnC beyond the previous 13-valent vaccine, while controls include other pneumonia cases without these serotypes. No treatment is given as part of the study. Participants will be involved for about 1 to 2 days for urine sample collection and providing medical history. Researchers will collect detailed information on illness and hospital stay up to 30 days through medical record review. The main outcome measured is the effectiveness of 20vPnC against pneumonia caused by the seven additional bacterial types over approximately 55 months. Other clinical features and pneumonia types will also be reviewed during this period.

A Study to Learn About How 20-Valent Pneumococcal Conjugate Vaccine Works in a Real-world Setting