Preliminary report on mass vaccination of man with live attenuated poliomyelitis virus in the Belgian Congo and Ruanda-Urundi.
D002063:Burundi; D015023:Democratic Republic of the Congo; D006801:Humans; D032541:Mass Vaccination; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D012432:Rwanda
POLIOMYELITIS/immunology