PESHAWAR, Pakistan— Gunmen on motorcycles opened fire on Pakistani police escorting a team of polio workers Tuesday during a door-to-door inoculation campaign in a former Pakistani Taliban stronghold, killing two policemen and a polio worker, police said.
No one immediately claimed responsibility for the attack in North Waziristan, a district in the Khyber Pakhtunkhwa province. The attack came a day after the government launched another nationwide anti-polio campaign amid a spike in attacks.
A passerby was also wounded, said Aziz Ullah, a local police official. The attackers fled the scene.
Since April, Pakistan has registered 11 new polio cases—all in North Waziristan, where parents often refuse to inoculate children. The outbreak has been a blow to the Islamic nation’s efforts to eradicate the disease, which can cause severe paralysis in children….