Tenn. doctor quarantines himself after treating Ebola patients

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A Tennessee doctor who returned to the U.S after treating Ebola patients has put himself in quarantine.

The virus has an incubation period of 21 days. So, that's how long he'll wait.

He was treating patients at the same facility where Dr. Kent Brantly was infected with the virus.

The doctor has helped in other crisis spots around the world and said he knows the danger.

"Whether it's war, like when I was in Somalia," said the doctor, Dr. Alan Jamison. "And when I was in the Philippines when they had the typhoon. In Haiti, we had cholera following the earthquake. So, these situations, they all pose risks."

The doctor is not showing any symptoms of Ebola, thus far.

But he'd rather be safe than sorry.

And he says he'll gladly go back to treat Ebola f he can help.