A White House official says the CIA will no longer use vaccine programs as cover for spy operations, answering health experts’ complaints that it had hurt international efforts to fight disease.

The CIA famously used a vaccination program as a ploy to gain information about the possible whereabouts of Osama bin Laden in Pakistan. That effort didn’t succeed, and the doctor involved was sentenced to a prison term. But the revelation had immediate effects — particularly in the fight against polio.

As The New York Times reported in 2012, vaccination teams were banned in some areas of Pakistan.

And vaccination workers have been assassinated, the deans from Tulane, Emory, Columbia and other universities wrote in a letter to President Obama dated Jan. 6, 2013. They also compared the use of vaccine programs to the CIA’s early infiltration of the Peace Corps, saying that in both cases, the practice had to be stopped to protect volunteers and gain access where people are most vulnerable to disease.

Homeland Security adviser Lisa Monaco recently sent a letter responding to the deans. She wrote that in August 2013, CIA Director John Brennan issued an order forbidding the use of vaccination programs to gather intelligence or genetic evidence.

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