Pneumococcal vaccines. Recent developments.
D000353:Africa, Southern; D002648:Child; D002675:Child, Preschool; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007109:Immunity; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D009512:New Guinea; D010919:Placebos; D011008:Pneumococcal Infections / Q000401:mortality / Q000517:prevention & control*; D012424:Rural Population; D013296:Streptococcus pneumoniae; D014611:Vaccination; D014612:Vaccines / Q000008:administration & dosage*
D010919:Placebos; D014612:Vaccines