MERS in America: Is spread of virus a worry?

FILE - This undated electron microscope image made available by the National Institute of Allergy and Infectious Diseases - Rocky Mountain Laboratories shows novel coronavirus particles, also known as the MERS virus, colorized in yellow. On Saturday, May 17, 2014 the U.S. Centers for Disease Control and Prevention said an Illinois man has apparently picked up an infection from the only American diagnosed with a mysterious Middle East virus, but the man has not needed medical treatment. (AP Photo/NIAID - RML, File)NEW YORK (AP) — A respiratory virus that has sickened hundreds in the Middle East has spread for the first time from one person to another in the United States. The case has raised questions about how much contact is needed to transmit the germ.