A novel virus, moderately contagious and moderately lethal, has surfaced and is spreading rapidly around the globe. Outbreaks first appear in Frankfurt, Germany, and Caracas, Venezuela. The virus is transmitted person-to-person, primarily by coughing. There are no effective antivirals or vaccines. U.S. troops stationed abroad are infected. Now the first case to reach the United States had been identified on a small college campus in Massachusetts.