1. Ministério da Saúde.Secretaria de Vigilância em Saúde. Boletim Epidemiológico Sífilis. 2020;Ano VI(1):44.
2. U.S. Department of Health and Human Services Atlanta.Sexually Transmitted Disease Surveillance 2019. 2021 Accessed Jul 15 2021. Available from:https://www.cdc.gov/std/statistics/2019/tables/24.htm
3. Evolution of the syphilis epidemic among men who have sex with men
4. Public Health England.Syphilis epidemiology in London: Sustained high numbers of cases in men who have sex with men. 2016. Accessed August 22 2021. Available from:https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/547072/london_syphilis_report.pdf
5. Invasion of the Central Nervous System by Treponema pallidum: Implications for Diagnosis and Treatment