A rare sexually transmitted disease never before confirmed in laboratory tests in New York City has been diagnosed in two men, leading health officials to remind the public about practicing safe sex and to encourage doctors to be on the lookout for signs of the disease. The cases are among the first reported in the United States and match a strain of the disease that only began to surface in Europe in recent years. The disease, lymphogranuloma venereum, known as LGV, is a rare form of chlamydia that can cause acute illness, lifelong disability and disfigurement as well as fuel...