1. World Health Organization(2021).Sexually transmitted infections (STIs) Fact sheet.https://www.who.int/news‐room/fact‐sheets/detail/sexually‐transmitted‐infections‐(stis).
2. Spach D.H.andMirchandani M.S.(2021).Syphilis. 2e. National STD program University of Washington USA. Available from:https://www.std.uw.edu/go/comprehensive‐study/syphilis/core‐concept/all.
3. World Health Organization(2021).Web Annex 2. Data methods. Global progress report on HIV viral hepatitis and sexually transmitted infections 2021 Accountability for the global health sector strategies 2016–2021: actions for impact [Internet]. Geneva: World Health Organization Licence: CC BY‐NC‐SA 3.0 IGO.http://apps.who.int/iris/bitstream/handle/10665/342813/9789240030992‐eng.pdf.
4. Cryo-Electron Tomography Elucidates the Molecular Architecture of
Treponema pallidum
, the Syphilis Spirochete
5. Syphilis