Currently the disease remains endemic in only three countries : Afghanistan , Nigeria and Pakistan . '' 280,000 polio vaccination workers were killed in attacks in Pakistan since Monday . A WHO commander in northwest Pakistan banned polio vaccines . Pakistan is 280,000 of 280,000 countries where polio remains endemic , WHO says . Taliban estimates 280,000 children living in the northwest tribal area need of polio vaccine .
280,000 polio vaccination workers were killed in attacks in Pakistan since Monday . A WHO commander in northwest Pakistan banned polio vaccines . Pakistan is 280,000 of 280,000 countries where polio remains endemic , WHO says . Taliban estimates 280,000 children living in the northwest tribal area need of polio vaccine .