ISLAMABAD/PESHAWAR, Pakistan (Reuters) - Pakistan's polio eradication campaign has hit serious problems with an alarming spike in reported cases that has raised doubts over the quality of vaccination reporting and prompted officials to review their approach to stopping the crippling disease.
The country is one of only three in the world where polio is endemic, along with neighbouring Afghanistan and Nigeria, but vaccination campaigns have cut the disease sharply, with only a dozen cases last year compared with 306 in 2014 and more than 350,000 in 1988, according to Pakistani health officials.