. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. ig6 Arthropods as Hosts of Pathogenic Protozoa becomes primarily a problem in economic entomology,—^it is a ques- tion of insect control, in its broadest interpretation. The lines of defence and offence against the disease as outlined by Boyce (1909) are' 1. Measures to avoid the reser- voir (man): Segregation. Screening of patients. 2. Measures to avoid Anopheles: Choice of suitable locality, when possible. Screening of houses and porches. Sleeping under mosquito nets. 3. Measures to extermin
. Handbook of medical entomology. Insect pests; Insects as carriers of disease; Medical parasitology. ig6 Arthropods as Hosts of Pathogenic Protozoa becomes primarily a problem in economic entomology,—^it is a ques- tion of insect control, in its broadest interpretation. The lines of defence and offence against the disease as outlined by Boyce (1909) are' 1. Measures to avoid the reser- voir (man): Segregation. Screening of patients. 2. Measures to avoid Anopheles: Choice of suitable locality, when possible. Screening of houses and porches. Sleeping under mosquito nets. 3. Measures to exterminate the Anopheles: Use of natural enemies. Use of cuhcides, oiling ponds, etc. Drainage and scavenging to destroy breeding places. Enforcement of penalties for harboring larvse or keeping stagnant water. Educational methods. 4. Systematic treatment with quinine to exterminate the parasites. Mosquitoes and Yellow Fever Yellow fever was until recently one of the most dreaded of epi- demic diseases. It is an acute, specific and infectious disease, non- contagious in character but occurring in epidemics, or endemics, within a peculiarly limited geographical area. It is highly fatal, but those who recover are generally immune from subsequent at- tacks. It is generally regarded as an American disease, having been found by Cortez, in Mexico, and being confined principally to the American continents and islands. It also occurs in Africa and at- tempts have been made to show that it was originally an African disease but there is not sufficient evidence to establish this 129. Larva of Anopheles. After Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Riley, William A. (William Albert), b. 1876; Johanssen, Oskar Augustus, 1870-. Ithaca, N. Y. , The Comstock Publishing Company
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