hcv infection. additionally, due to the development of novel therapies to treat hiv, antiretroviral therapies, hiv-positive individuals are taking chronic medications to prevent the progression of hiv to aids. however, these medications can have negative side effects on the liver, and can therefore worsen liver disease. the effects of hiv infection on hcv have been widely studied. however, the data on the effects of hcv infection on hiv are conflicting. some studies show that hcv infection does not affect hiv progression, while others have shown a faster progression of hiv in those co-infected with hcv. when considering this conflicting information, it is important to note that many of these studies were completed before the introduction of antiretroviral therapies for hiv, which are now the standard-of-care for hiv-positive individuals.