Nasopharyngeal Colonization With Heptavalent Pneumococcal Conjugate Vaccine Serotypes of Streptococcus pneumoniae With Prolonged Vaccine Dosing Intervals

Abstract

Although PCV-7 serotypes were detected less after third and fourth PCV-7 doses, longer dosing intervals, particularly in day-care attendees, were associated with higher risk of PCV-7 detection in the NP.