The United States is trying to stop an invisible enemy from spreading into American cities. It is the new and powerful virus called -- the letters stand for Middle East respiratory syndrome. And the... See More
The United States is trying to stop an invisible enemy from spreading into American cities. It is the new and powerful virus called -- the letters stand for Middle East respiratory syndrome. And the search is on for hundreds of people who may have been exposed by the two patients already in the hospital. Tonight the CDC sending this warning to airports around the country telling passengers to wash their hands not to touch their face. ABC's Steve -- -- now -- this new alert tonight. In tonight health officials are trying to track down more than 500 passengers from at least twenty states anyone including crew members. Who shared -- may first flight with that Florida patient diagnosed with -- a new and potentially deadly respiratory disease imported from the Middle East. The posting warnings tonight at 182 of the nation's busiest airports. The infected passenger from Saudi Arabia flew into Boston Atlanta and into Orlando where state health departments are warning travelers to look out for flu like symptoms. We travel a lot so that is pretty concerning. Yeah and especially its -- going overseas next month. At two hospitals in Orlando where the 44 year old Saudi medical worker went for treatment. To health care workers who treated him are already showing symptoms one is hospitalized with what looks like pneumonia. To be safe -- hospital -- twenty other health care workers home for two weeks. I wouldn't. Think we're an -- Norman -- last of this we're going to see all the travelers home from all of this part of the world self. -- -- confirmed cases in the US. The CDC tells us today that doctors can only treat the symptoms giving oxygen to help breathing and drugs to break the fever so there's no cure no treatment really. Right there's no treatment there's no vaccine for this -- they think it's spread during close and long lasting exposure to someone who's sick. And believe it might be the -- that spreads the virus. The Florida doctors are taking chances wearing special masks goggles gowns and gloves when they walk into the sick patients room. When they leave they take all that gear off and throw it away. And Steve tell us tonight what's the condition of the two confirmed patients. Well both of those patients are recovering tonight and the first patient from Indiana has already been sent home but this is still. Very serious business a third of the people have gotten sick with this adopt. All right -- -- -- on the story again for us tonight thank you Steve.
This transcript has been automatically generated and may not be 100% accurate.