A patient who lived with human immunodeficiency virus (HIV) for more than a decade is now free of the disease, researchers report today in the journal Nature. The retreat of the infection is only the second time such a case has been reported. In both instances, the patients received a bone marrow transplant to treat cancer. The scientists say the treatment strategy is not practical as a standard approach for the millions currently living with the illness. They also caution that it is too ear