[Symposium on immunization against poliomyelitis in Mexico. Programs and results. Present status, conclusions and future programs].
D006801:Humans; D007114:Immunization; D008800:Mexico; D011051:Poliomyelitis; D023321:Poliovirus Vaccines; D014611:Vaccination
D023321:Poliovirus Vaccines
POLIOVIRUS VACCINE; VACCINATION