Residual colonization by vaccine serotypes in rural South Africa four years following initiation of pneumococcal conjugate vaccine immunization.
Shabir Ahmed MadhiSusan A NzenzeMarta C NunesLilian ChinyanganyaNadia Van NiekerkKathleen KahnRhine TwineLinda De GouveiaAnne Von GottbergTinevimbo ShiriPublished in: Expert review of vaccines (2020)
The residual prevalence of serotypes 19F and 23F, four years after introducing PCV in the South Africa, suggests ongoing community transmission and transient vaccine effects.