Vaccine(128) pertussis(91) Streptococcus pneumoniae(86) malaria(74) vaccination(71) immunogenicity(45) Pregnancy(35) Safety(33) Shigella(31) pneumococcal conjugate vaccine(31) Plasmodium falciparum(29) Whooping cough(28) immunization(28) Vaccines(27) Bordetella pertussis(27) Tetanus(24) Conjugate vaccine(21) Salmonella(20) children(20) adjuvant(19) invasive pneumococcal disease(19) polio(18) pneumococcus(18) Epidemiology(17) Tdap(16) immune response(16) immunisation(16) Acellular pertussis vaccine(16) Diphtheria(15) ETEC(15)