Study Suggests A Higher Rate Of SARS Death
Statistical analysis of 1,425 patients suspected of having SARS who were admitted to Hong Kong hospitals from Feb 20 to Apr 15 suggests death rate from SARS could be up to 55 percent in people 60 and older and 13.2 percent in younger people, for overall rate of 19.9 percent, far higher than health officials had thought; unless numbers fall drastically, SARS would be among infectious diseases with highest death rates; difficulty of calculating mortality rates for newly emerging diseases noted; photo (M)