Blowback

Remember how U.S. intelligence used a physician who was running an immunization campaign as a covert agent, in an attempt to determine if a high value target was living in Pakistan?

Well, this is why aid workers, and others, were so upset about it. There has been great progress toward the goal of polio eradication. Widespread belief that immunization campaigns could be used as a cover for espionage now threatens to stall progress in one of the few countries where polio still has a foothold.