Question

Describe 5 harmful effects of protozoans in humans.

Answer 1

The 5 harmful diseases caused by protozoans in humans are:

1. Amoebiasis - is caused by Entamoeba histolytica and can lead to ulcers in the colon.

2. Diarrhoea - is caused by Giardia lamblia and leads to loose bowels.

3. Trypanosomiasis - is caused by the Trypanosoma species which are flagellate parasites of blood plasma and leads to sleeping sickness.

4. Leishmaniasis - is caused by the species of Leishmania and leads to skin sores and spleen enlargement.

5. Malaria - is caused by four different species of Plasmodium and leads to malaria.