However, the efficacy of these two drugs dropped sharply in recent years due to the global distribution of mutant viruses carrying drug resistance. (sciencedaily.com)
Acting on advice from the NSABB, the U.S. government last month asked Science and Nature to publish only the broad conclusions of the two studies, and not to reveal the scientific details, in order to limit the risk that uncontrolled proliferation of such research might lead to accidental or intentional release of similar mutant viruses. (scientificamerican.com)
This pathway allows multiple copies of HIV to transmit together from cell to cell, a genetic property that can help mutant viruses to accumulate. (sciencedaily.com)