It was around this time last year that Severe Acute Respiratory Syndrome (SARS) thrust itself onto the global consciousness. The killer, flu-like disease, which emerged in the Chinese province of Guangdong in November 2002, was by March of last year spreading rapidly across East Asia. The epidemic eventually killed thousands across the Pacific Rim and hurt the global economy as trade and travel were disrupted. However by June of last year SARS was gone, vanishing into thin air. This led to...