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Protozoa - Trichomoniasis
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Protozoa - Trichomoniasis

Trichomoniasis
Caused by Trichomonas vaginalis
  • This protozoa has no cyst form.
  • Thus, its trophozoites, which can’t survive outside the host, are transmitted during sexual contact in urogenital secretions.
  • Trichomoniasis is the most common non-viral STI in the United States.
– However, most infected individuals, especially males, are asymptomatic carriers. – When symptomatic, trichomoniasis produces vaginitis or urethritis, and sometimes prostatitis. – Vaginitis and urethritis are characterized by a burning, itchy sensation, and may be accompanied by a foul-smelling “frothy” discharge. Trichomonas vaginalis morphology* – Oblong shape – Axostyle runs the length of the body and extends posteriorly – Four anterior flagella, and the undulating membrane, which is a modified fifth flagellum.
Images:
“Trichomonas Vaginalis.” Wikipedia, October 3, 2018. https://en.wikipedia.org/w/index.php?title=Trichomonas_vaginalis&oldid=862364495.

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