Pretty self-explanatory: Virus Badly Underreported in Beijing, W.H.O. Team Finds by Erik Eckholm, and Underreporting, Secrecy Fuel SARS in Beijing, WHO Says by John Pomfret. Also, Cases of Lethal New Illness Rise Sharply in Interior China by Erik Eckholm:

Reported cases of severe acute respiratory syndrome rose sharply today in an interior province of northern China, heralding the possible spread of the disease through the country's vast, medically underserved hinterlands.

And meanwhile Apprehension Deters Buyers From Attending China Fair by Keith Bradsher, not to mention the fact that Youth and Fitness Offer Little Defense Against Disease by Keith Bradsher:

The new respiratory disease known as SARS is beginning to kill younger and healthier adults as well as older people....

Ahh, not to worry. Scroll down to this graph (via Medpundit).