Effectiveness of 13-valent Pneumococcal Conjugate Vaccine against Vaccine-type Invasive Pneumococcal Disease in Children under 5 Years Old in Zhejiang, China: a case-control study

PCV13 is highly effective at preventing VT- IPD in children in China. Findings underscore PCV13's public health value and provide local evidence that could support decision-making for routine childhood immunization programme.