The development of new vaccines. 3. Field studies.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002986:Clinical Trials as Topic; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007223:Infant; D008875:Middle Aged; D011055:Poliovirus Vaccine, Oral; D014612:Vaccines
D011055:Poliovirus Vaccine, Oral; D014612:Vaccines