Behavior: Battling an Elusive Invader

The herpes virus perplexes researchers and defies a cure

By any measure, herpes is an extraordinary bug. "It is the ultimate parasite," declares University of Michigan Microbiologist Charles Shipman. Says Washington, D.C., Urologist Peter Gross: "If you were doing a science-fiction movie, you couldn't invent something better than herpes." What makes it unique is that unlike influenza and other viruses, it survives in the human body. long after an attack has subsided. Once herpes has found its way into your system, says Dr. Harold Kessler,...