CIA scheme to capture Bin Laden led to vaccination drop in Pakistan: study 2 minutes read Washington, May 11 (EFE).- A fake vaccination campaign orchestrated by the United States’ Central Intelligence Agency (CIA) to capture Osama bin Laden in 2011 resulted in a significant decrease in immunization rates in Pakistan, according to a study published Tuesday. The research paper appears in the Journal of the European Economic Association, published by Oxford University Press. “The empirical evidence highlights that events which cast doubt on the integrity of health workers or vaccines can have severe consequences for the acceptance of health products such as vaccines,” said Andreas Stegmann, one of the paper’s authors.