Recent Examples on the WebSometimes syphilis presents as a painless chancre, or a round, open sore on your genitals. Zahra Barnes, SELF, 12 Oct. 2021 Syphilis is transmitted from person to person by direct contact with a syphilitic sore, known as a chancre. Gabriela Miranda, USA TODAY, 16 June 2021 Syphilis: If your partner has chancres (firm, round sores) that aren’t covered by the condom, the infection can spread to you. Zahra Barnes, SELF, 29 Aug. 2019 In the primary stage, chancres (usually firm, round, and painless) appear at the site of infection. Carolyn L. Todd, SELF, 28 May 2019