Ebola Alert: 2 More Americans Fighting for Their Lives in Quarantine

Global alert in the race to contain the largest outbreak of this deadly virus in history.
2:44 | 07/30/14

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Transcript for Ebola Alert: 2 More Americans Fighting for Their Lives in Quarantine
There's urgent new concern about the deadly ebola virus. Tonight two American peace corps workers in Africa are in quarantine, possibly exposed. We also have news about those two other Americans, the missionaries who were infected and are fighting for their lives. Here at home anxiety created a scare at a hospital in north Carolina, and ABC's chief medical director has the news around the globe. Reporter: Tonight the peace corps pulling out 340 American volunteers as two were quarantined after come into contact with an ebola patient. They are slowing slight improvement. Dr. Ken Brantly from Texas and Nancy writebol in strict isolation. Staff communicating through windows. Staff wearing full protective suits. Tonight we spoke with writebol's son Jeremy who is texting his mother every night. She's resting as much she can. Reporter: The urgent question now, will the American patients be evacuated to the U.S. For emergency treatment. The CDC uses special isolation pods like these to transport patients without skoezing the crew. Air travel leading to global fierce of contagion. Flights from the outbreak zone carry passengers to more than 30 countries around the world. This is essentially a multi-front war against the virus. Reporter: Today in Liberia, doctors using hand-held thermometers to check departing passengers for fever. The French government has provided 100 heat protecting cameras. In the U.S. 20 airports are equipped with quarantine stations responding to any patients appearing ill, including those with sboms of ebola. You only get sick through close contact with body fluids like blood or touching contaminated services. Hospitals in the U.S. On high alert. A patient recently traveled to a high risk country. It was a false alarm and the patient was discharged. Hospitals are asking every patient their recent travel history. That's a good idea for not just ebola but many infectious diseases. Thank you, rich. Our thoughts are with all those families tonight. Thank you.

This transcript has been automatically generated and may not be 100% accurate.

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