Although there are many potential reasons—such as individual differences in drug
absorption or metabolism—for the failure of highly active antiretroviral therapy (HAART) to
keep a patient's HIV in check, experts believe the chief reason is poor adherence to
treatment regimens, which can promote the emergence of drugresistant strains. New
findings presented at the 6th Conference on Retroviruses and Opportunistic Infections last
month in Chicago underscored the importance of strict adherence in maintaining “virologic …