Effectiveness of 20-valent pneumococcal conjugate vaccine against pneumococcal pneumonia hospitalizations among U.S. adults: Test-Negative Design
Objective: This study estimated the vaccine effectiveness (VE) of 20-valent pneumococcal conjugate vaccine (PCV20) against culture-confirmed pneumococcal pneumonia hospitalizations among adults using a test-negative case-control design. Methods: We included adults ([≥]18 years) hospitalized with pneumonia in the U.S. V...