PCV13 Vaccine

Pneumococcus

Impact of 13-Valent Pneumococcal Conjugate Vaccination on Streptococcus pneumoniae Carriage in Young Children in Massachusetts. 2014, Lee, J Pediatric Infect Dis Soc

13-valent vaccine (PCV13) also did not change colonization with pneumococcus. Colonization with vaccine serotypes decreased, and non-vaccine serotypes increased by 12% per year.
Colonization level among vaccinated PCV13 children and unvaccinated did not differ. Colonization with PCV13 strains was 70% lower among healthy vaccinated children, but not among children with ARVI.