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HONG KONG - MAY 14: Passengers are seen wearing masks as they arrive at Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

Getty Images 6 months ago

HONG KONG - MAY 14: A passenger is seen wearing a mask at Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

Getty Images 6 months ago

HONG KONG - MAY 14: Passengers are seen wearing masks as they arrive at Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

Getty Images 6 months ago

HONG KONG - MAY 14: Passengers are seen wearing masks as they arrive at Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

Passengers wear masks upon his arrival at the Hong Kong Airport April 30, 2009. The World Health Organization said on Wednesday the world is at the brink of a pandemic, raising its threat level as the swine flu virus spread and killed the first person outside of Mexico, a toddler in Texas.

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Contract staff of the Port Health department at the Hong Kong Airport ask passengers to fill in health declaration forms on arrival in Hong Kong on April 30, 2009.

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Passengers make their way to immigration at the Hong Kong Airport ask passengers to fill in health declaration forms on arrival in Hong Kong on April 30, 2009.

A family leaves the Hong Kong Airport after landing in the city March 11, 2009.

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Passengers walk past a Cathay Pacific adveritisng at Hong Kong International Airport on March 11, 2009. Airline Cathay Pacific reported a net loss of 8.6 billion Hong Kong dollars (1.1 billion US) for 2008, on the back of falling cargo demand and volatile fuel prices.

Hong Kong students welcome the delegation of Shenzhou-7 manned space mission at Hong Kong International Airport December 5, 2008.

AP Photo 3 months ago

In this photo taken on Monday, Aug. 17, 2009, a Cathay Pacific Airways passenger aircraft parks at the Hong Kong International Airport, Hong Kong.

AP Photo 3 months ago

In this photo taken on Monday, Aug. 17, 2009, a Cathay Pacific Airways passenger aircraft takes off at the Hong Kong International Airport, Hong Kong.

AP Photo 3 months ago

In this photo taken on Monday, Aug. 17, 2009, a Cathay Pacific Airways passenger aircraft, top, parks near an Air China passenger aircraft at the Hong Kong International Airport.

A Cathay Pacific Airways passenger plane takes off near other Cathay flights at the Hong Kong Airport August 17, 2009. Shares of Cathay Pacific were suspended on Monday, amid talk that one of its major shareholders, Citic Pacific, might sell its stake to another shareholder, Air China.

A Cathay Pacific Airways passenger aircraft (back) parks behind an Air China passenger aircraft at the Hong Kong Airport August 17, 2009.

Getty Images 6 months ago

HONG KONG - MAY 14: A member of airline ground-staff is seen wearing a mask at Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

Getty Images 6 months ago

HONG KONG - MAY 14: A passenger wears a mask whilst travelling on plane to Hong Kong International Airport on May 14, 2009 in Hong Kong, China.

A worker wears a mask while waiting for visitors to attend an upcoming gift fair at the arrival hall of the Hong Kong Airport April 30, 2009.

Two Japanese visitors wearing masks listen to a travel agent upon their arrival at the Hong Kong Airport April 30, 2009.

Passengers are asked to fill in health declaration forms upon their arrival at the Hong Kong Airport April 30, 2009.

AP Photo 6 months ago

Passengers wearing mask walk their way to the immigration checkpoint upon their arrival at the Hong Kong Airport Thursday, April 30, 2009."We must not be complacent.

AP Photo 6 months ago

Passengers wearing masks are asked to fill in health declaration forms upon their arrival at the Hong Kong Airport Thursday, April 30, 2009."We must not be complacent.

AP Photo 6 months ago

Passengers are asked to fill in health declaration forms upon their arrival at the Hong Kong Airport Thursday, April 30, 2009."We must not be complacent.

AP Photo 6 months ago

Contract staff of Port Health stand in attention before shifting duties at the Hong Kong Airport Thursday, April 30, 2009."We must not be complacent.

AP Photo 6 months ago

Members of a family are asked to complete their health declaration forms by health officers upon their arrival at the Hong Kong Airport Thursday, April 30, 2009."We must not be complacent.