So the faulty clinical definition of SARS played a crucial role.
"Thousands of people arrive in the United States from areas where SARS outbreaks are occurring to participate in gatherings such as academic courses, business meetings, or sporting events. Guidance is needed to provide a consistent, rational approach to SARS prevention without unnecessarily stigmatizing these groups or interfering with collegial pursuits, commerce, and other important activities. "
What else is there to say?
"Unnecessary stigmatization" is what we need to guard against.