What Diseases Are Caused By Protozoans?

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What is the most common protozoan disease worldwide?

Parasitic and ProtozoalLeishmaniasis is a relatively common protozoal infection worldwide. The most prevalent species causing disseminated leishmaniasis is Leishmania donovani.

What diseases are caused by worms?

According to the Centers for Disease Control and Prevention (CDC), the following parasitic infections are common in the U.S.:

  • neurocysticercosis.
  • Chagas disease.
  • toxocariasis.
  • toxoplasmosis.
  • trichomoniasis, or trich.

What are the symptoms of protozoa?

Common symptoms, which appear one to three weeks after exposure, include diarrhea, nausea, stomach cramps, gas, greasy stool (because fat absorption is being blocked), and possible dehydration. The parasite remains in the colon and does not cause systemic infection.

How are protozoan diseases transmitted?

Transmission of protozoa that live in a human’s intestine to another human typically occurs through a fecal-oral route (for example, contaminated food or water or person-to-person contact). Entamoeba histolytica is a protozoan. A microscope is necessary to view this parasite.

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