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Syphilis (/ ˈ s ɪ f ə l ɪ s /) is a sexually transmitted infection caused by the bacterium Treponema pallidum subspecies pallidum. [1] The signs and symptoms depend on the stage it presents: primary, secondary, latent or tertiary.
The history of syphilis has been well studied, but the exact origin of the disease was the source of debate until archaeological and genetic evidence showed conclusively it originated in the Americas.
A sexually transmitted infection (STI), also referred to as a sexually transmitted disease (STD) and the older term venereal disease (VD), is an infection that is spread by sexual activity, especially vaginal intercourse, anal sex, oral sex, or sometimes manual sex.
The Tuskegee Study of Untreated Syphilis in the Negro Male [1] (informally referred to as the Tuskegee Experiment or Tuskegee Syphilis Study) was a study conducted between 1932 and 1972 by the United States Public Health Service (PHS) and the Centers for Disease Control and Prevention (CDC) on a group of nearly 400 African American men with syphilis.
Autopsy of brain with meningitis. Syphilis is a sexually transmitted infection that is brought upon by the gram negative bacteria, Treponema pallidum. Treponema pallidum are various spiral shaped motile bacteria of the family spirochaetaceae. [8]
Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]
The CIRI data were used in over 170 countries by scholars, students, policymakers, and analysts representing over 400 organizations. CIRI's founders and co-directors were political scientists David Cingranelli at Binghamton University, SUNY [1] and David L. Richards at the University of Connecticut. [2] K.