Name two diseases caused by protozoans.

Malaria and Amoebic Dysentery are two common diseases caused by protozoans. Malaria, caused by Plasmodium species, is transmitted through mosquito bites and affects millions worldwide, causing fever, chills, and potentially fatal complications if untreated. Amoebic dysentery, caused by Entamoeba histolytica, spreads through contaminated food and water, leading to severe diarrhea, abdominal pain, and intestinal infections. Other notable protozoal diseases include sleeping sickness (Trypanosoma), kala-azar or leishmaniasis (Leishmania), and giardiasis (Giardia). These diseases are more prevalent in areas with poor sanitation and inadequate water treatment. Prevention involves maintaining personal hygiene, drinking clean water, proper food handling, and controlling disease vectors like mosquitoes and flies. Treatment typically requires specific antiprotozoal medications prescribed by healthcare professionals.