President Barack Obama this afternoon outlined U.S. efforts to combat the Ebola outbreak.

Obama said that the chances of an Ebola outbreak in the United States are “extremely low” and that there is now increased screening in Africa airports to prevent infected persons from traveling to the U.S.

In the unlikely event that Ebola does reach the U.S., Obama said that the U.S. is working with flight crews to identify sick people. He said more labs can effectively test for the virus, and that the government is working with hospitals to ensure that they are prepared for a possible Ebola case.

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Still, Obama explained that Ebola is an epidemic in West Africa, where he said it is “spiraling out of control” and worsening.

At the request of Liberia’s government, Obama said the U.S. will establish a military command center there to support civilian efforts across the region. Other measures to combat Ebola include deploying personnel from the U.S. Public Health Service and creating an air bridge to get health workers and medical supplies into West Africa faster.

The president called on Congress to approve funding for these measures.

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Watch the full speech above.