Actually Spree, Postyle is right, it's not the number of cases, it's the rate of growth and SARS is still spreading at an accelerating rate. Hopefully there will be a vaccine or medicine to bring it under control but the troubling thing about SARS is that it appears to mutate at a higher rate than is typical.
I think in all likelihood SARS won't have a long-term impact on phone sales but don't discount the seriousness of the disease.