Poliomyelitis vaccine

[Dave Paprocki]

Extensive vaccination has almost eradicated polio worldwide. But cases still occur in areas with incomplete immunization, such as sub-Saharan Africa and southern Asia.
There are 3 serotypes of poliovirus (an enterovirus).
For more information, see Polio Advisory Committee on Immunization Practices Vaccine Recommendations and Centers for Disease Control and Prevention (CDC): Polio Vaccination.
(See also Overview of Immunization.)