Syphilis is an STI that can have very serious complications when left untreated.

  • Syphilis is easy to cure in its early stages.
  • Pregnant women should be tested regularly for syphilis because infection with syphilis can cause serious problems in a baby.
  • Between 2017 and 2018, the number of reported primary and secondary (P&S) cases in the United States increased by 14.4%, and there were 35,063 P&S syphilis cases reported in 2018.  Most (64%) of these cases were among MSM.