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Politics : PRESIDENT GEORGE W. BUSH -- Ignore unavailable to you. Want to Upgrade?

To: DMaA who wrote (131612)	3/13/2001 1:12:29 PM
From: Gordon A. Langston	Read Replies (1) \| Respond to of 769667

OT a little: Mass vaccination may raise AIDS deaths in some places WASHINGTON The use of a weakened strain of live HIV - the virus that causes AIDS - in mass vaccination campaigns may actually increase death rates from the disease in many countries, researchers said Monday, describing a medical "Catch-22." A research team headed by a University of California, Los Angeles, scientist created a mathematical model to predict for the first time the outcome of future vaccination efforts using an AIDS vaccine made from an attenuated - or weakened - form of live HIV. To their surprise, the researchers said such a vaccine would increase death rates in countries where the AIDS epidemic was either low or moderate, while the same vaccine would reduce greatly the death rates in nations where AIDS was rampant. "The exact same vaccines could be beneficial in one country, but detrimental in another," Dr. Sally Blower, professor of biomathematics and a member of the UCLA AIDS Institute, said. Blower said an attenuated vaccine might prove worthwhile only in countries facing perilous transmission rates. We'll still need behavior change.