From AIDS Map:
Investigators in Seattle have reported a cluster of nine HIV infections involving resistance to multiple drugs from all the three main classes of antiretrovirals. The report is published in the October 1st edition of the Journal of Acquired Immune Deficiency Syndromes.
Seven of the nine men were newly diagnosed with HIV, the other two men had chronic HIV infection and were receiving antiretroviral therapy. One of these cases appears to involve superinfection during antiretroviral therapy that had been suppressing viral load to undetectable levels.