This file photo provided by the National Institute for Allergy and Infectious Diseases shows a colorized transmission of the MERS coronavirus that emerged in 2012.
This file photo provided by the National Institute for Allergy and Infectious Diseases shows a colorized transmission of the MERS coronavirus that emerged in 2012. AP
This file photo provided by the National Institute for Allergy and Infectious Diseases shows a colorized transmission of the MERS coronavirus that emerged in 2012. AP

Obama briefed on U.S. cases of deadly MERS virus

May 13, 2014 2:57 PM