Health officials in Burundi have declared an outbreak of polio linked to the vaccine, the first time the paralytic disease has been detected in the East African country for more than three decades.
Polio has been diagnosed in an unvaccinated four-year-old child in the western part of the country and in two other children who were contacts of the child, authorities in Burundi confirmed in a statement on Friday. Officials also found traces of the virus in sewage samples, confirming the circulation of polio.
