More than 3 years after imposing a moratorium on U.S. funding for certain studies with dangerous viruses, the National Institutes of Health (NIH) in Bethesda, Maryland, today lifted this so-called “pause” and announced a new plan for reviewing such research. But federal officials haven’t yet decided the fate of a handful of studies on influenza and Middle East respiratory syndrome (MERS) that were put on hold in October 2014.