Epidemiologist Sees a Way to Curb Spread of HIV/AIDS
Posted on Feb 22, 2010
Going after HIV with antiretroviral drugs as soon after infection as possible could significantly slow the spread of the virus, according to epidemiologist Brian Williams. One familiar challenge in implementing this strategy, however, lies in getting people to agree to be tested. —KA
The concentration of the virus drops by a factor of 10,000 with antiretroviral treatment, resulting in 25 times the reduction of infectiousness, said Williams, formerly of the World Health Organization and now at the South African Centre for Epidemiological Modelling and Analysis. That means that if more people with HIV received this therapy early, there would be fewer new cases of the disease, he said Saturday at the annual meeting of the American Association for the Advancement of Science.
“We could effectively stop transmission within five years,” Williams said.
About 33 million people are living with HIV, according to 2008 estimates by the World Health Organization and UNAIDS. That year, 2 million people died of AIDS and 2.7 became newly infected.
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