The U.S. Centers for Disease Control and Prevention reported in April that cases of polio worldwide increased four-fold in 2002 due largely to an outbreak of the disease in India.
In 2001 there were only 483 confirmed cases of polio which shot up to 1,920 confirmed cases in polio after an outbreak in the Indian states of Uttar Pradesh and Bihar. That was the single worst outbreak of the disease since the World Health Organization began its campaign to eradicate polio in 1988. Cases from the Indian outbreak constituted 71 percent of all polio cases in 2002.
Afghanistan, Egypt, Niger, Nigeria, Pakistan, and Somalia also reported cases of polio in 2002.
Source:
Polio cases on the increase. The BBC, April 25, 2003.