Disease trackers are asking U.S. hospitals to help follow a new strain of swine flu and are trying to determine whether it’s related to hundreds of illnesses and 57 deaths in Mexico.
A previously unseen variant of H1N1 swine influenza has sickened at least seven people in California and Texas, the Atlanta-based U.S. Centers for Disease Control and Prevention said yesterday. The World Health Organization said 57 people died among more than 800 in the Mexico City region who developed flu-like symptoms in the past month.
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