Humans can contract Dengue when bitten by an Aedes mosquito which has been infected with the virus. About 100 million people get infected each year, with mortality of 1%. [Image Credit: James Cathany, CDC]

The first ever vaccine against the Dengue virus has undergone clinical trials, and the results are mixed. However, the very possibility of such a vaccine is encouraging for Dengue research.

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Study shows that there is clearly an autoimmune response involved in atherosclerosis, which may lead to a vaccine to prevent heart disease.

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HIV prevention drug mechanism

A drug for prevention of HIV infection has been approved by the FDA, holding promises of slowing down the AIDS epidemic.

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