...The program was ultimately unsuccessful in locating Osama bin Laden. It led to the arrest of a participating physician, Shakil Afridi, and was widely ridiculed as undermining public health.[2][3] The program is credited with increasing vaccine hesitancy in Pakistan[4][5][6][7] and a rise in violence against healthcare workers for being perceived as spies.[8] The rise in vaccine hesitancy following the program led to the re-emergence of polio in Pakistan, with Pakistan having by far the largest number of polio cases in the world by 2014.[8]