President Obama has been briefed on mystery virus MERS, White House spokesman Jay Carney said at today's briefing.

CNN reported on the two individuals in America who were infected with MERS:

There is a second confirmed case of Middle East Respiratory Syndrome imported into the United States, the Centers for Disease Control and Prevention announced Monday.

Officials from the CDC and the Florida Department of Health are investigating.

The first U.S. case was reported this month in Indiana. That patientwas released from a hospital Friday into home isolation, according to state health officials.

The Indiana patient was an American health care provider who had been working in Saudi Arabia and was on a planned visit to Indiana to see his family.

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