Thursday, November 17, 2011

Top Ten MYTHS About HIV Vaccine


Dec. 1 is World AIDS Day, and in commemoration of the occasion, the HIV Vaccine Trials Network, headquartered at Fred Hutchinson Cancer Research Center, debunks the top 10 myths about HIV vaccine research.

Myth No. 1: HIV vaccines can give people HIV. HIV vaccines do not contain HIV and therefore a person cannot get HIV from the HIV vaccine. Some vaccines, like those for typhoid or polio, may contain a weak form of the virus they are protecting against, but this is not the case for HIV vaccines. Scientists make HIV vaccines so that they look like the real virus, but they do not contain any HIV. Think of it like a photocopy: It might look similar, but it isn't the original. In the past 25 years more than 30,000 volunteers have taken part in HIV vaccine studies worldwide, and no one has been infected with HIV by any of the vaccines tested because they do not contain HIV.

Myth No. 2: An HIV vaccine already exists. There is no licensed vaccine against HIV or AIDS, but scientists are getting closer than ever before to developing an effective vaccine against HIV. In 2009, a large-scale vaccine study conducted in Thailand called RV144 showed that a vaccine combination could prevent about 32 percent of new infections. Researchers are starting to understand why this vaccine combination worked and how to improve upon it.

Researchers around the world continue to search for an HIV vaccine that is even more effective. Leading this effort is the HIV Vaccine Trials Network, the largest publicly funded group of HIV vaccine researchers in the world. The HVTN is an international effort to find a safe and effective vaccine to stop the spread of HIV. It is funded by the U. S. National Institutes of Health.

Myth No. 3: Joining an HIV-vaccine study is like being a guinea pig. Unlike guinea pigs, people can say yes or no to participating in research. All study volunteers must go through a process called informed consent that ensures they understand all of the risks and benefits of being in a study, and those volunteers are reminded that they may leave a study at any time without losing rights or benefits. The HVTN takes great care in making sure people understand the study fully before they decide whether or not join. All HVTN research adheres to U.S. federal regulations on research, as well as the international standards for the countries in which it conducts research.

Myth No. 4: A person must be HIV positive to be in an HIV vaccine study. Not so. While some research groups are conducting studies of vaccines that might be used in people who are already infected with HIV, the vaccines being tested by the HVTN are preventive vaccines. They must be tested on volunteers who are not infected with HIV.

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