FDA approves HIV drug for use in adults with resistance to existing treatments . Isentress , by Merck & Co. , is the first of new class of drugs to get approval . More testing necessary before it is approved for new HIV patients , children . Dr. Anthony Fauci , a noted HIV expert and director of the National Institute of Allergy and Infectious Diseases at the National Institutes of Health , said the FDA 's approval `` will be most welcome in the community of physicians taking care of HIV-infected patients . '' Comment:
FDA approves HIV drug for use in adults with resistance to existing treatments . Isentress , by Merck & Co. , is the first of new class of drugs to get approval . More testing necessary before it is approved for new HIV patients , children . Comment: