The Florida MERS patient , specifically , was fever-free and continuing to improve Wednesday while undergoing treatment at Orlando 's Dr. P. Phillips Hospital , the state 's health department said . NEW : Spokeswoman : 4 tested in San Antonio for MERS ; none has symptoms . The first case of the virus was reported on Sept. 17 at a health care facility in Saudi Arabia. CDC official : `` We do n't know as much as we 'd like so far '' Two U.S. airlines are coordinating with health officials over cases in U.S .
NEW : Spokeswoman : 4 tested in San Antonio for MERS ; none has symptoms . The first case of the virus was reported on Sept. 17 at a health care facility in Saudi Arabia. CDC official : `` We do n't know as much as we 'd like so far '' Two U.S. airlines are coordinating with health officials over cases in U.S .