U.S. health officials warned on Tuesday that the coronavirus is likely to spread in communities in the United States. They urged individuals to get themselves and their families ready. But what can you do?Infectious disease experts stressed that people should not panic and offered practical advice."The mantra is, "Keep calm and carry on," said Dr. Marguerite Neill, an infectious disease expert at Brown University.And use common sense, experts said."If you see someone on a bus who is coughing, move away," said Dr. Stanley Perlman, an infectious disease and coronavirus expert at the University of Iowa.Stay home from work if you are sick.Wash your hands frequently, said Dr. Trish Perl, an infectious disease specialist at UT Southwestern Medical Center. "It's not super sexy but it works," she said. With SARS, also a coronavirus, but one that is much deadlier, hand washing reduced the risk of transmission by 30-50%, she said.Of course, you should cough...