Some results of country-wide vaccinations against poliomyelitis with Sabin's attenuated strains in Hungary.
D006801:Humans; D006814:Hungary; D011051:Poliomyelitis; D011055:Poliovirus Vaccine, Oral; D013180:Sprains and Strains; D014611:Vaccination
D011055:Poliovirus Vaccine, Oral
POLIOVIRUS VACCINE, ORAL