Hong Kong health workers watch a bank of monitors which display information on the temperatures of incoming passengers on April 27, 2009 at the international airport in Hong Kong - a city at the forefront of the SARS epidemic in 2003 and already on alert for bird flu. Hong Kong authorities have announced a series of tough measures to combat the threat of swine flu, including detaining anyone showing symptoms of the virus after arriving from an infected area and have advised against all non-essential travel to worst-hit Mexico.
Hong Kong health workers watch a bank of monitors which display information on the temperatures of incoming passengers on April 27, 2009 at the international airport in Hong Kong - a city at the forefront of the SARS epidemic in 2003 and already on alert for bird flu. Hong Kong authorities have announced a series of tough measures to combat the threat of swine flu, including detaining anyone showing symptoms of the virus after arriving from an infected area and have advised against all non-essential travel to worst-hit Mexico.
A woman wears a mask at a shopping mall on April 27, 2009 in Hong Kong - a city at the forefront of the SARS epidemic in 2003 and already on alert for bird flu. Hong Kong authorities have announced a series of tough measures to combat the threat of swine flu, including detaining anyone showing symptoms of the virus after arriving from an infected area and have advised against all non-essential travel to worst-hit Mexico.
A Chinese mainland tourist, who failed an initial temperature screening, has his temperature double checked by health workers on his arrival at the International Airport in Hong Kong April 27, 2009. Asia, a continent that has battled deadly viruses such as the H5N1 bird flu and SARS in recent years, began taking steps over the weekend to ward off a new flu virus.
Signs at a train station ask commuters to take flu precautions on April 27, 2009 in Hong Kong - a city at the forefront of the SARS epidemic in 2003 and already on alert for bird flu. Hong Kong authorities have announced a series of tough measures to combat the threat of swine flu, including detaining anyone showing symptoms of the virus after arriving from an infected area and have advised against all non-essential travel to worst-hit Mexico.
A woman wearing a mask walks past a flu warning poster outside a local hospital in Hong Kong Monday, April 27, 2009. In Hong Kong, Thomas Tsang, controller for Hong Kong's Center for Health Protection, said the government and the territory's universities aim to jointly develop a quick test for the new flu strain in a week or two that will return results in four to six hours, compared to existing tests that can take two or three days.