Related Conditions


A parasite causes malaria; a bite from an infected Anopheles mosquito passes the parasite to humans. After the parasites enter the body by a mosquito bite, they disappear from the circulating blood within an hour and gather in the liver. After several days, infected red blood cells (RBCs) emerge from the liver and infect other RBCs.


Tetanus is a sometimes fatal disease of the central nervous system, caused by a poison (toxin) made by the tetanus bacterium which usually enters the body through an open wound. Tetanus bacteria live in soil, manure, the human intestine and other places.

Yellow Fever

Yellow fever is a rare viral disease caused by the bite of a mosquito. Symptoms may include fever; flu-like symptoms, such as headache, vomiting and backache; bleeding of the gums; bloody urine; and yellowing of the skin or eyes (jaundice).