The diseases caused by various microorganisms are as follows:
(i) Protozoa: Malaria, amoebiosis, dysentery, giardiasis, kala-azar, etc.
(ii) Virus: AIDS, polio, dengue, rabies, chicken pox, influenza, etc.
(iii) Bacteria: Pneumonia, diphtheria, tuberculosis, meningitis, leprosy, typhoid, tetanus, syphilis, etc.
(iv) Fungi: Fungi mainly causes skin diseases and food poisoning. Malaria is caused by a parasite found in female π΄πππβππππ mosquitoes. When the mosquitoes carrying the malarial parasite bite a person, the parasite enters the blood stream and the person suffers from malaria.