An image from an electron microscope of Treponema pallidum, the bacteria that causes syphilis. In 2022, the number of reported cases of syphilis in the United States was the highest it has been since ...

Congenital syphilis has become more than ten times as common over the past decade, the C.D.C. reported. “The situation is dire,” said one expert. By Apoorva Mandavilli See more of our coverage in your ...

Syphilis is a sexually transmitted infection (STI) caused by bacteria. There are four stages of syphilis. The infection is curable, especially with early diagnosis and treatment. Untreated syphilis ...

Data just published online shows a worrying increase in infectious syphilis cases in women living in Australia aged 15–44 (referred to as “reproductive age”) and a subsequent rise in transmission from ...

Genital ulcers could be one of many sexually transmitted diseases or an infection that is not transmitted by sex. An expert walks you through a case. This is the first of a three-part series on ...