MEXICO CITY- APR 28: Doctors greet each other in front of the General Hospital Dr. Manuel Gea Gonzalez in Mexico City, the epicenter of the global H1N1 swine flu outbreak April 28, 2009 in Mexico City
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MEXICO CITY- APR 28: Doctors greet each other in front of the General Hospital Dr. Manuel Gea Gonzalez in Mexico City, the epicenter of the global H1N1 swine flu outbreak April 28, 2009 in Mexico City