`` Although the proportion of arriving Americans being quarantined remains low , the random nature of the selection process increases the uncertainty surrounding travel to China , '' the alert said . Travelers to China with flu-like symptoms could face 7-day quarantine . Chinese government officials try to control spread of H1N1 virus . The U.S. Centers for Disease Control and Prevention says the swine flu is a "severe acute respiratory syndrome" that can cause coughing, fever, nausea or vomiting in some people who have not been immunized.
Travelers to China with flu-like symptoms could face 7-day quarantine . Chinese government officials try to control spread of H1N1 virus . The U.S. Centers for Disease Control and Prevention says the swine flu is a "severe acute respiratory syndrome" that can cause coughing, fever, nausea or vomiting in some people who have not been immunized.