Two Strains of Polio Are Gone, but the End of the Disease Is Still Far Off

Only polio virus Type 1 persists, and only in Pakistan and Afghanistan. But now mutant vaccine viruses are paralyzing some unvaccinated children.
Source: NYT Health - Category: Consumer Health News Authors: Tags: Poliomyelitis Vaccination and Immunization Viruses Paralysis Epidemics Muslims and Islam Gates, Bill and Melinda, Foundation Afghanistan Pakistan World Health Organization Source Type: news