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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.
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]
In human anatomy, the penis (/ ˈ p iː n ɪ s /; pl.: penises or penes; from the Latin pēnis, initially "tail" [1]) is an external sex organ (intromittent organ) through which males urinate and ejaculate.
Guatemala. The Guatemala syphilis experiments were United States-led human experiments conducted in Guatemala from 1946 to 1948. The experiments were led by physician John Charles Cutler, who also participated in the late stages of the Tuskegee syphilis experiment.
Untreated early syphilis infections results in a high risk of poor pregnancy outcomes, including saddle nose, lower extremity abnormalities, miscarriages, premature births, stillbirths, or death in newborns.
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 ...