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May 2010

Dory Flop Sign of Syphilis

Author Affiliations

Author Affiliation: County of San Diego HIV, STD, and Hepatitis Branch, Health and Human Services Agency, San Diego, California.


Copyright 2010 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2010

Arch Dermatol. 2010;146(5):572. doi:10.1001/archdermatol.2010.66

Syphilis is a sexually transmitted disease caused by the bacterium Treponema pallidum variant pallidum. Incidence of primary and secondary syphilis in the United States increased each year from 2000 (2.1 cases per 100 000 persons) to 2008 (4.5 cases per 100 000 persons).1 In 2008, 13 500 primary and secondary syphilis cases were reported in the United States,1 and each year an estimated 12 million syphilis cases occur worldwide.2 Early diagnosis and prompt treatment of syphilis can benefit both individual patients and public health prevention and control efforts.3

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