Syphilis rates in the United States have more than doubled since 2000, according to a recent analysis. The increases have been most pronounced among men.
In 2013, syphilis incidence reached 5.3 cases per 100 000 population, more than twice the lowest ever reported rate of 2.1 per 100 000 in 2000. The analysis, which is based on data that health departments report to the National Notifiable Diseases Surveillance System, focuses on syphilis cases diagnosed between 2005 and 2013.
Syphilis Rates Increase, Especially Among Men. JAMA. 2014;312(2):122. doi:10.1001/jama.2014.7443