What Is A Coronavirus?

(CBS) — A coronavirus is a common infection that almost everyone gets at least once in their life. So is there a reason for residents here in the U.S. to be concerned about a new coronavirus from China? Here’s what you need to know.
U.S. public health officials say the current risk here is low. “I don’t think this is something the United States public should be worried or frightened about. But they should know that we are taking this, obviously, very seriously as it evolv