The Risk to Heterosexuals

The history of medicine offers a harsh lesson about the deadly impact of sexually transmitted disease. The lethal form of syphilis was first introduced into the known world in Barcelona in 1494. Twelve years later, in an era when travel was difficult, the disease had reached China, killing millions along the way.

Five years into the AIDS epidemic, the deadly virus has already achieved a worldwide reach, and is threatening to break out in the general population. Two weeks ago, the U.S. Surgeon General warned that the threat of AIDS has made casual sex hazardous to anyone's health. The National Academy...

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