Poliomyelitis serosurveillance and immunization for elderly people in otherwise efficiently immunized areas.
Arya
S C
SC
D000367:Age Factors; D000368:Aged; D000914:Antibodies, Viral / Q000276:immunology*; D006801:Humans; D008297:Male; D011051:Poliomyelitis / Q000175:diagnosis / Q000276:immunology*; D017955:Poliovirus / Q000276:immunology*
D000914:Antibodies, Viral