A toddler PCV booster dose following 3 infancy priming doses increases circulating serotype-specific IGG levels but does not increase protection against carriage
Keywords: پاسخ سرولوژیک; Pneumococcal conjugate vaccines; PCV; Carriage; Serologic response; Booster; Vaccine schedule; Infants; Toddlers; 7VT+6A; pneumococcal serotypes included in PCV7 and serotype 6A; MCHCs; Mother-and-Child Health Centers; MOPA; multiplexed opsonophagocytosis