Dirksen/Hart subway riders pass by a hand sanitizing station at the stop in the U.S. Capitol on Thursday, May 7, 2009.
Poultry trader sleeps in a hammock over ducks at her stall in a market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and...
Poultry trader carries chickens at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and officials from...
Poultry trader arrives on a motorcycle loaded with ducks at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural...
Poultry trader carries ducks at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and officials from nearly...
Poultry trader inspects a duck at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and officials from...
Poultry trader loads ducks and chickens into a cage at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts...
Men wait to load chickens onto a truck at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and officials...
Poultry trader sleeps in a hammock over ducks at her stall in a market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and...
Poultry trader holds a cage of live chickens and ducks at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts...
Men wait to load chickens onto a truck at a poultry market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and officials...
Poultry trader sleeps in a hammock over ducks at her stall in a market in the suburbs of Hanoi on April 20, 2010. Health and agricultural experts and...
Protesters chant during a rally outside the United Nations building to mark the 25th anniversary of the AIDS pandemic.
People line up for flu shots outside a clinic in the Covenant House on W. 17th St. The city gave flu shots to thousands of New Yorkers to prepare for...
Josephine Perez yells as she joins other protesters during a rally outside the United Nations building to mark the 25th anniversary of the AIDS...
Smallpox Vaccination - Long line winds up to and around Morrisania Hosptial, 167th Street and Gerard Avenue in the Bronx, as thousands await turn to...
Man receives a flu shot at a clinic in the Covenant House on W. 17th St. The city gave flu shots to thousands of New Yorkers to prepare for the flu...
Man receives a flu shot at a clinic in the Covenant House on W. 17th St. The city gave flu shots to thousands of New Yorkers to prepare for the flu...
Actress Rosie Perez speaks during a rally outside the United Nations building to mark the 25th anniversary of the AIDS pandemic.
Fludrill Date: Kevin Clark/The Washington Post Neg #: 192968 La Plata, MD Ginger Barnes, left, puts a mask on Matthew Trusnovic during the pandemic...
Fludrill Date: Kevin Clark/The Washington Post Neg #: 192968 La Plata, MD Lori Padgett, RN, takes notes over the deadly ill patient volunteers such...
Fludrill Date: Kevin Clark/The Washington Post Neg #: 192968 La Plata, MD A volunteer patient is led to a tent for further review during the pandemic...
Fludrill Date: Kevin Clark/The Washington Post Neg #: 192968 La Plata, MD William Trusnovic left, talks with Paul Lenharr of the Charles County...
French Health Minister Roselyne Bachelot speaks with a hospital staff member on August 28, 2009 in Saint-Denis on the French overseas island of La...
Picture taken on August 28, 2009 at the Felix Guyon hospital in Saint-Denis on the French overseas island of La Reunion, where there has been 22 500...
Ukraine's Prime Minister Yulia Tymoshenko wears a protective mask as she visits a hospital in Ivano-Frankivsk on November 3, 2009. The World Health...
Couple kisses as they make a line to be assisted at an Influenza A prevention and detection medical mobile unit in Mexico City, on April 29, 2009....
Two nuns waiting at Mexico City's international airport on April 27, 2009 wear surgical masks to ward off contagion with the new multi-strain swine...
Diagnostic Hybrids workers package flocked specimen swabs and transport medium materials for distribution to physicians and urgent care locations...
Diagnostic Hybrids workers package flocked specimen swabs and transport medium materials for distribution to physicians and urgent care locations...
Respiratory virus screening and identification kits, which are used to detect viruses including the H1N1 influenza A strain, originally labeled as...
Workers at Diagnostic Hybrids pack boxes containing supplies that will be sent to laboratories for detecting various viruses including the H1N1...
Workers at Diagnostic Hybrids pack boxes containing supplies that will be sent to laboratories for detecting various viruses including the H1N1...
FedEx Corp. Truck is loaded with Diagnostic Hybrids boxes containing supplies that will be sent to laboratories for detecting various viruses...
Mike Frazier, a FedEx Corp. Employee, loads Diagnostic Hybrids boxes containing supplies that will be sent to laboratories for detecting various...
Bottles of refeed medium that will be used to culture respiratory viruses when testing for viruses including the H1N1 influenza A strain, originally...
Vials containing Rhesus monkey tissue cell cultures that will be used to test for viruses including the H1N1 influenza A strain, originally labeled...
Vials containing R-Mix TOO cells that are used by laboratories to rapidly culture respiratory viruses including the H1N1 influenza A strain,...
Diagnostic Hybrids laboratory workers prepare Rhesus monkey tissue cell cultures that will be sent to labs for use in testing for viruses including...
Health workers monitor a thermal scanner as passengers arrive at Changi airport in Singapore, on Monday, April 27, 2009. Singapore has stepped up...
Passenger leaves after picking up baggage at a carousel, at Changi airport in Singapore, on Monday, April 27, 2009. Singapore has stepped up...
Passengers line up at the Immigration counter upon arrival, at Changi airport in Singapore, on Monday, April 27, 2009. Singapore has stepped up...
Health workers monitor a thermal scanner as passengers arrive at Changi airport in Singapore, on Monday, April 27, 2009. Singapore has stepped up...
Health worker wearing a surgical mask watches as passengers walk by a thermal scanner upon arrival, at Changi airport in Singapore, on Monday, April...
Health worker wearing a surgical mask examines a toddler after he showed a higher-than-average temperature on a thermal scanner upon arrival at...
Health workers wearing surgical masks wait for passengers to walk past a thermal scanner at Changi airport in Singapore, on Monday, April 27, 2009....
Janet Napolitano, secretary of the Department of Homeland Security, right, speaks as Richard Gibbs, White House press secretary, looks on during a...
Janet Napolitano, secretary of the Department of Homeland Security, right, listens to Richard Gibbs, White House press secretary, during a press...
David Nabarro, senior coordinator for avian and pandemic influenza for the United Nations , listens during a session on day one of the World Economic...
Diagnostic Hybrids laboratory workers prepare Rhesus monkey tissue cell cultures that will be sent to labs for use in testing for viruses including...
Diagnostic Hybrids workers package flocked specimen swabs and transport medium materials for distribution to physicians and urgent care locations...
Diagnostic Hybrids laboratory workers prepare Rhesus monkey tissue cell cultures that will be sent to labs for use in testing for viruses including...
Honorable Mike O. Leavitt, Health and Human Services Secretary, speaks with Dr. Anthony S. Fauci, Director, National Institute of Allergy and...
