Evidence of Airborne Transmission of SARS

Abstract
Yu et al. (April 22 issue)1 report evidence of airborne transmission of the severe acute respiratory syndrome (SARS) virus. In Figure 1 of their article, the Amoy Gardens housing complex appears to be isolated, when in fact, just 20 m east of building F there is a high school and 50 m southwest of buildings A and B there is an even more densely populated housing estate (Lower Ngau Tau Kok Estate). Were there any cases of SARS in those two areas?