The U.S. Navy says 13 sailors from the USS Theodore Roosevelt who had apparently recovered from the coronavirus and had received negative test results have now tested positive for a second time. In a statement released earlier on Saturday when five sailors were found to have retested positive, the Navy said the sailors had "met rigorous recovery criteria, exceeding CDC guidelines," including testing negative for the virus at least twice, but have now retested positive. The statement said the sailors had been monitoring their health and adhered to social-distancing protocols while on board the Roosevelt, which has been docked in Guam following an outbreak infecting hundreds of crew members. "These five Sailors developed influenza-like illness symptoms and did the right thing reporting to medical for evaluation," the statement said.