The triad of headache, backache, and fever, with or without chills, is the
commonest symptom complex in these individuals.
Chronic cases exhibit:
Enlargement of the spleen.
Other serious, often fatal, complications.
Malaria is an ancient disease and is one of the most important preventable diseases of
a. Development of Civilization. Malaria was well described by Hypocrites in
the third century B.C. Occurring throughout the tropical and subtropical areas of the
world, it has postponed the development of large regions of the earth for centuries and
has undermined the culture and welfare of many countries from ancient Greece to
Figure 5-2. Adult female mosquito.
b. Health Hazard.
Malaria was the most serious health hazard encountered by American
troops in the South Pacific area during World War II, where about 100,000 men were
infected, and the success of the military campaign was jeopardized for a short time.
In Southeast Asia those United States troops who did not practice
effective preventive measures contracted malaria.