Politics & Government

January 14, 2008 6:00 AM

Tropical disease headed toward U.S., health officials warn

U.S. health officials are warning that a sometimes-deadly tropical disease that's spread by mosquitoes is re-emerging worldwide and could gain a foothold in the U.S. one day. Dengue, a flu-like illness, infects 50 million to 100 million people a year.

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