[Preliminary report on the use of oral vaccination in Colombia with the MEFI strain of polio virus type II adapted to the chick embryo].
D003105:Colombia; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D013180:Sprains and Strains; D014611:Vaccination
POLIOMYELITIS/immunology
Comunicación preliminar de ensayo de vacunación oral en Colombia con la cepa MEFI, adaptada al embrión de pollo de tipo II del virus-polio.