My source for the five confirmed SARS cases is the U.S. CDC report issued a couple of weeks ago confirming the presence of a new coronavirus in at least four of the five "confirmed" SARS cases they checked.
I do not recall if they ever found the SARS virus in the fifth case. However, one of the problems with SARS has been the difficulty making a positive diagnosis early in the course of the disease (it is difficult to find the virus until a couple of weeks after a person has full blown symptoms, but that is too late to be useful).
As I recall, the same material is available on the New England Journal of Medicine's web site, and it is easier to find. I have not checked the NEJM web site in a week, and they may have new info.
Those are the only "confirmed" SARS cases I have seen mentioned in print in the U.S. Why more information has not been forthcoming I do not know (I may have just missed something, however).