FILE Photo. Pakistani policeman stand guard as a health worker administers polio drops to a child during a polio vaccination campaign after a day of an attack by gunmen in Karachi on April 21, 2016. - Photo: AFP file
QUETTA, (Pakistan): Gunmen killed two Pakistani police officers guarding polio vaccinators in the turbulent southwestern province of Balochistan, officials said on Wednesday (April 23), the second attack since the launch of a nationwide inoculation drive this week.
In Pakistan and neighbouring Afghanistan -- the only countries where polio remains endemic -- militants have for decades targeted vaccination teams and their security escorts.
