[ADVANTAGES OF THE SABIN VACCINE. URGENCY OF MASS IMMUNIZATION].
D006801:Humans; D032541:Mass Vaccination; D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
D011055:Poliovirus Vaccine, Oral; D023321:Poliovirus Vaccines
POLIOVIRUS VACCINE, ORAL
VANTAGGI DEL VACCINO SABIN. URGENZA DELL'IMMUNIZZAZIONE DI MASSA.