It's a confounding question on the lips of disease detectives: Why have the only deaths from the swine flu outbreak happened in Mexico? Investigators also want to know why the disease has killed young ...

The World Health Organization on Monday raised its pandemic alert level in response to the outbreak of swine flu that originated in Mexico. The move from level three to level four on the WHO's ...

As the virus continues to spread globally, officials step up response. May 2, 2009— -- Though the Mexican government said there were no reports of swine flu deaths overnight, U.S. officials ...

An unusual therapy developed at The Jackson Laboratory (JAX) could change the way the world fights influenza, one of the deadliest infectious diseases. In a new study in Science Advances, researchers ...

NEW YORK (AP) — More U.S. children have died this flu season than at any time since the swine flu pandemic 15 years ago, according to a federal report released Friday. The 216 pediatric deaths ...

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