In Pakistan, a member of the anti-polio vaccination team was gunned down by unknown gunmen while he was administering vaccines to children in the restive northwest tribal region. This is one of the last frontier where the crippling disease still remains endemic. <br/><br/>Officials said, the anti-polio vaccination team came under firing by unknown gunmen in Jamrud area of khyber Agency bordering Afghanistan. One of the injured worker was rushed to hospital where he succumbed to his injuries. Pakistan, alongwith Afghanistan, are the only two countries in the world where polio remains endemic.