To American Citizens in the U. S. Consulate General Shanghai's Consular District...
At this time, the United States Centers for Disease Control guidelines state that persons returning from one of the affected areas should monitor their health for ten days.
Should a person have been exposed to a SARS patient, the CDC guidelines continue:
Persons who may have been exposed to SARS and who develop fever or respiratory symptoms should limit interactions outside the home and should not go to work, school, out-of-home child care, or other public areas until ten days after resolution of fever and respiratory symptoms. During this time, infection control precautions should be used to minimize the potential for transmission. At this time, in the absence of fever or respiratory symptoms, persons who may have been exposed to SARS patients need not limit their activities outside the home and should not be excluded from school or work.
On the basis of these guidelines, there is, at present, no requirement for quarantine simply on the basis that an individual is entering or returning to the United States from China.