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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 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.
Originally the area of the district belonged to Kabin Buri district.When that district was considered to be too large, and to better counter the underground Thai communist party attacks, a minor district (king amphoe) Na Di was established on 15 July 1974 by splitting off tambons Na Di, Sam Phanta, Saphan Hin, and Thung Pho. [1]
Gummas have a firm, necrotic center surrounded by inflamed tissue, which forms an amorphous proteinaceous mass. The center may become partly hyalinized.These central regions begin to die through coagulative necrosis, though they also retain some of the structural characteristics of previously normal tissues, enabling a distinction from the granulomas of tuberculosis where caseous necrosis ...
The study was led by the U.S. Public Health Service, beginning in 1946, up until 1948. [12] The experiments were initially supposed to be held at a prison in Terre Haute, Indiana, but were moved to Guatemala after researchers had a hard time consistently infecting prisoners with gonorrhea. [13]
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.
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]
The Fritzl case was a case that emerged in 2008, when a woman named Elisabeth Fritzl (born 6 April 1966) informed investigators in the city of Amstetten, Lower Austria, that she had been held captive for 24 years by her father, Josef Fritzl (born 9 April 1935).