As swine flu spreads around the world, China has acted with an aggressiveness that can only come from unpleasant firsthand experience with epidemics. Official cover-ups allowed SARS to spread in 2002 and 2003, eventually killing 349 on the mainland and leading to the sacking of both the Health Minister and the mayor of Beijing. In recent years, the country has waged a steady battle against avian influenza, which has killed two dozen people in China and prompted fears that it could mutate into a deadlier plague
