Residual colonization by vaccine serotypes in rural South Africa four years following initiation of pneumococcal conjugate vaccine immunization.
Background: We evaluated pneumococcal colonization in children and adults between the time of 7-valent pneumococcal conjugate vaccine (PCV) introduction in the immunization program in 2009 to two years after transitioning to PCV13 in 2011.
Author List: Madhi SA, Nzenze SA, Nunes MC, Chinyanganya L, Van Niekerk N, Kahn K, Twine R, De Gouveia L, Von Gottberg A, Shiri T.
Journal Name: Expert Rev Vaccines. 2020 Apr;19(4):383-393. doi: 10.1080/14760584.2020.1750377. Epub 2020 Apr 10. PMID: 32237932.