protozoal disease
protozoal disease, disease caused by protozoans. These organisms may remain in the human host for their entire life cycle, but many carry out part of their reproductive cycle in insects or other hosts. For example, mosquitoes are vectors of plasmodium, the cause of malaria. See also entamoeba; Giardia lamblia; sleeping sickness.
This article was most recently revised and updated by Kara Rogers.
Citation Information
Article Title:
protozoal disease
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
29 August 2020
Access Date:
November 13, 2026