"Three workers in a polio eradication campaign were shot in Pakistan on Wednesday, and two of them were killed, the latest in an unprecedented string of attacks over the past three days that has partially halted the U.N.-backed campaign," Reuters reports (Ahmad, 12/19). "Earlier on Tuesday, five health workers involved in the vaccination drive were killed in the cities of Karachi and Peshawar," News Pakistan notes (12/19). Another health care worker was killed on Monday, according to a statement issued Tuesday by the WHO, UNICEF and the Pakistani and provincial governments, which condemned the multiple attacks. "We call on the leaders of the affected communities and everyone concerned to do their utmost to protect health workers and create a secure environment so that we can meet the health needs of the children of Pakistan," the statement said (12/18). The Associated Press reports the WHO suspended the vaccination campaign in two of the country's provinces (Khan, 12/19). However, CNN reports the "attacks prompted authorities to suspend the campaign throughout the country" (Khan, 12/19). "Under the canceled program, Pakistani health officials planned to administer millions of 'polio drops' to immunize people," according to International Business Times, which adds, "The program involved 25,000 workers targeting more than 30 million children" (Ghosh, 12/18).