Risky Business

In the morning light, the reception area of the women's clinic of the Mortimer Market Center in central London could almost pass for a college common room, with pop playing on the radio, bright posters on the walls and 20-somethings sprawled on functional furniture, feigning an air of nonchalance. But there is nothing lighthearted here. This five-story sexual-health clinic and others like it form the front line against a nasty trend that is sweeping Britain and much of Europe, the consequences of which could be infertility or even death. New cases of sexually transmitted diseases (STDs) — including HIV/AIDS, gonorrhea and...