The setting was new. Never before had the annual International AIDS Conference, now convening for the 10th time, taken place in Asia. And yet the 10,000 researchers and others gathered in Yokohama, Japan, found it hard to shake a terrible sense of deja vu. Once again, despite their efforts, the epidemic is galloping ahead: from 14 million people infected worldwide in 1993 to 17 million today. Once again, disappointing results have led U.S. researchers to postpone large-scale trials of experimental vaccines. Once again, a cure is nowhere in sight.
Equally disturbing were reports that efforts to contain the epidemic in Asia,...