by John K Borchardt
NEWS ANALYSIS	Two mosquito-borne diseases break past old geographic boundaries West Nile encephalitis and dengue fever have invaded the US and, because they're mosquito-borne, they're likely to spread rapidly. News from The Scientist 2000, 1(1):20001121-02 Published   21 November 2000

HOUSTON "Mosquitoes are flying syringes," declared Frank Cortez-Flores of Loma Linda University (California), and two mosquito-borne diseases have broken past old geographic boundaries to invade the US. The first, West Nile encephalitis, is a newcomer to the western hemisphere and thus has garnered the most headlines. The other, dengue fever, is considered the world's most important vector-borne viral disease affecting people, in terms of both morbidity and mortality.

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