Trichomonas Vaginalis

Question 1

Habitat (site of infection)

Question 2

Morphology

Question 3

Modes of infection

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Disease

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Laboratory diagnosis

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Drugs

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2 Trichomonas vaginalis

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• Urogenital system (of females and males).

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Trophozoite (no cyst stage): causes the disease and infective stage

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1. Sexual intercourse: main method.

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2. Contact with contaminated underwear

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towels and toilets.

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3. From mother to fetus during delivery> neonatal trichomoniasis

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Disease: trichomoniasis (in females also called Trichomonas vaginitis)

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Asympto matic trichomoniasis: in about half of females and most males.

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> Symptomatic trichomoniasis:

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In females: causes vaginitis (severe vaginal pruritus and dysuria with a frothy

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purulent and foul-smelling vaginal discharge).

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In males: usually asymptomatic

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but can cause prostatitis and urethritis.

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1. Examination of urogenital specimens (vaginal discharge

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urethral discharge or

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urine) to detect trophozoites: directly or after culture

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2. Antigen detection in urogenital specimens (.e.g.

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using RDTs)

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3. Molecular dagnosis. (to detect parasite’s DNA ): not routinely done.

Question 23

29 of 118

Question 24

Metronidazole or tinidazole