INFECTIOUS DISEASES:
WHO Probes Deadliness of China's Pig-Borne Disease
Dennis Normile
International experts fear that a new, more virulent form of the bacterium Streptococcus suis could be responsible for killing 38 humans and more than 600 pigs in China's central Sichuan Province over the past 2 months. But they are puzzled about how a rare--and rarely fatal--disease that usually appears in isolated cases among humans became so deadly and whether it might strike again.