Syphilis Is Back

Syphilis is a sexually transmitted disease. It has become so rare in the United States that many younger doctors have never seen it. But a government report says that syphilis is becoming more common. Cases of the disease have increased every year since 2000. Last year, 20,000 people were diagnosed with syphilis. Doctors may need to be retrained to recognize symptoms. The report is published in the April issue of the journal Lancet Infectious Diseases.