Residents Take Protective Measures Against Spread Of SARS In Asia

INCHEON, SOUTH KOREA - APRIL 4: South Koreans and tourists from Hong Kong wear face masks against possible infection of Severe Acute Respiratory Syndrome (SARS) after arriving at Incheon International Airport April 4, 2003 west of Seoul, South Korea. There is a countrywide alert to find about 200 people who may have had exposure to the virus on a recent trip from China. (Photo by Chung Sung-Jun/Getty Images)