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Poliomyelitis
Diphtheria
Oral Poliovirus Vaccine
Inactivated Poliovirus Vaccine
Poliovirus Vaccines
Antibodies, Viral
Poliovirus
Infants
Newborn Infant
Immunization Programs
Vaccination
Population Surveillance
Disease Outbreaks
United States
India
Oman
World Health
Risk Factors
Health Policy
Incidence
Co-Publications
31
26
17
16
10
9
7
6
5
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