New AIDS Vaccine Fails
Harvard AIDS researchers working with monkeys say the virus overcame an experimental vaccine by changing a single gene, killing one of the 8 animals being tested. This disappointment doesn?t mean that AIDS vaccines are doomed to fail, but it illustrates how hard it will be to produce one.
HIV is already is known to mutate and become resistant to standard AIDS drugs in at least half of all Americans who have the infection. Now researchers have seen a similar outcome with an experimental vaccine that tries to stimulate immune cells to prevent the virus from multiplying.
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