No abstract available
MeSH terms
-
Humans
-
Immunization Programs
-
International Cooperation
-
Poliomyelitis / epidemiology*
-
Poliomyelitis / prevention & control*
-
Poliovirus / metabolism*
-
Poliovirus Vaccines / therapeutic use*
-
Public Health / methods*
-
Public Health / trends
-
Risk
-
Risk Assessment / methods*
-
World Health Organization