Wait, You Can Have Ebola and Still Board a Plane?

Photo Credit: Luc Gnago / ReutersA man who flew from Liberia to Dallas has become the first Ebola case to be diagnosed within the U.S., the CDC reported Tuesday, and he is currently in isolation at Dallas’s Texas Health Presbyterian Hospital.

Americans have been warned not to travel to Liberia, Guinea, or Sierra Leone, but they obviously can—and do.

So how are countries keeping suspected Ebola patients (well, most of them, anyway) contained within their borders?

Thermometers, mostly.

People are screened for elevated temperatures before they’re allowed to board planes departing from the countries where Ebola is raging. Fever is one of the earliest symptoms of Ebola, but people can be infected for between two and 21 days without showing signs of illness.

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