No one immediately claimed responsibility for the attack.
More than 200 polio workers and police assigned for their protection have been killed in Pakistan since the 1990s, according to health officials and authorities.
Pakistan and neighboring Afghanistan are the only two countries where polio has not been eradicated. Pakistan reported at least 74 cases in 2024 and two cases since January.
Pakistan regularly launches campaigns against polio despite attacks on the workers and police assigned to the inoculation drives. Militants falsely claim the vaccination campaigns are a Western conspiracy to sterilize children.