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Drug-resistant HIV set to surge

HIV is striking back against the antiretroviral drugs that keep it largely in check in rich countries, thanks both to its exposure to the major drugs and to individuals who don't realise they're infected and so spread resistant strains to new partners.

Drug-resistant strains of HIV have already been documented in San Francisco and elsewhere in the US, and Europe. Now a model of their transmission, based on studies of gay San Francisco men, forecasts a rapid upsurge in the next five years.

What's more, as access to antiretroviral therapy is expected to expand in poorer countries, they could experience a rise in resistance too, predicts Sally Blower of the University of California, Los Angeles, lead author on the analysis.
 
 

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