Problems of epidemiologic surveillance in a program of vaccination with live attenuated polio virus.
G M
GM
ERICKSON
A W
AW
MENZIN
L B
LB
CLAYTON
M E
ME
FLIPSE
A V
AV
HARDY
D062665:Epidemiological Monitoring; D006801:Humans; D011051:Poliomyelitis / Q000276:immunology*; D017955:Poliovirus; D014611:Vaccination
POLIOMYELITIS/immunology