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The Significance of Infra-specific Variations of Hosts and Parasites in the Epidemiology of Helminths of Medical Importance *

Published online by Cambridge University Press:  18 November 2009

G. Webbe
G. Webbe
Affiliation:
Department of Medical HelminthologyLondon School of Hygiene and Tropical Medicine
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Extract

The epidemiology of parasitic infections may be profoundly influenced by infra-specific variations in infectivity for either intermediate or definitive hosts. Such variations will decide the basic ecology of the host-parasite relationship, and variations in virulence and pathogenicity therefore determine different patterns of disease. While some of the evidence of infra-specific variations has been derived from experimental studies, much of it has been recorded by those concerned with investigations of the epidemiology and transmission of parasitic infections and the practical aspects of their control. The unequivocal demonstration of genetic heterogeneity of certain parasites of medical importance has therefore resulted in a better understanding of their epidemiology and, in some cases, is leading to greater precision in attempts to control them.

Type
Research Papers
Information
Journal of Helminthology , Volume 45 , Issue 4 , December 1971 , pp. 327 - 335
Copyright
Copyright © Cambridge University Press 1971

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References

Barbosa, F. S. and Barretto, A. C., 1960.—“Differences in susceptibility of Brazilian strains of Australorbis glabratus to Schistosoma mansoni.” Expl parasit., 9, 137–140.CrossRefGoogle ScholarPubMed
Brumpt, E., 1936—Précis de parasitologie. 5th edition, 2 volumes. Paris :Masson. 2139 pp.Google Scholar
Cram, E. B., 1953.—“Evidence concerning geographic strains of human schistosomes and their molluscan hosts.” in Thapar Commemoration Volume, University of Lucknow, pp. 51–62.Google Scholar
Cram, E. B., Files, V. S. and Jones, M. F., 1947.—“Experimental molluscan infection with Schistosoma mansoni and Schistosoma haematobium.” Nat. Inst. Health Bull., 189, 81–94.Google Scholar
Cridland, C. C., 1955.—“The experimental infection of several species of African freshwater snails with Schistosoma mansoni and Schistosoma haematobium.” J. trop. Med. Hyg., 58, 1–11.Google Scholar
DeWitt, W. B., 1954.—“Susceptibility of snail vectors to geographic strains of Schistosoma japonicum.” J. Parasit., 40, 453–456.CrossRefGoogle ScholarPubMed
Duke, B. O. L. and Wijers, D. J. B., 1958.—“Studies on Loaiasis in monkeys. I. The relationship between human and simian Loa in the rain-forest zone of the British Cameroons.” Ann. trop. Med. Parasit., 52, 158–175.CrossRefGoogle ScholarPubMed
Files, V. S. and Cram, E. B., 1949.—“A study on the comparative susceptibility of snail vectors to strains of Schistosoma mansoni.” J. Parasit., 35, 555–560.CrossRefGoogle Scholar
Forrester, A. T. T., Nelson, G. S. and Sander, G., 1961.—“The first record of an outbreak of Trichinosis in Africa south of the Sahara.” Trans. R. Soc. trop. Med. Hyg., 55, 503–513.CrossRefGoogle ScholarPubMed
Forsyth, D. M. and Bradley, D. J., 1966.—“The consequences of bilharziasis—medical and public health importance in north-west Tanzania.” Bull. Wld hlth org., 34, 715–735.Google Scholar
Forsyth, D. M. and Bradley, D. J. and Macdonald, G. 1965.—“Urological complications of endemic schistosomiasis in school-children. Part I. Usagara school.” Trans. R. Soc. Trop. Med. Hyg., 59, 171–178.CrossRefGoogle Scholar
Forsyth, D. M. and Bradley, D. J., and Macdonald, G. 1966.—“Urological complications of endemic schistosomiasis in schoolchildren. Part 2. Donge school, Zanzibar.” Ibidem, 60, 568–578.Google Scholar
Franks, M. B., 1946.—“Blood agglutinins in filariasis.” Proc. Soc. exp. Biol. Med., 62, 17–18.CrossRefGoogle ScholarPubMed
Galliard, H., 1957.—“Outbreak of filariasis (Wuchereria malayi) among French and north African servicemen in North Vietnam.” Bull. Wld hlth org., 16, 601–608.Google ScholarPubMed
Hawking, F. and Worms, M. J., 1961. “Transmission of filarioid nematodes.” Ann. Rev. Ent., 6, 413–432.CrossRefGoogle ScholarPubMed
Hsü, H. F. and Hsü, S. Y. L, 1956a.—“On the infectivity of the Formosan strain of Schistosoma japonicum in Macaques.” Am. J. Trop. Med. Hyg., 5, 136–144.CrossRefGoogle ScholarPubMed
Hsü, H. F. and Hsü, S. Y. L., 1956b.—“On the infectivity of the Formosan strain of Schistosoma japonicum in Homo sapiens.” Ibidem, 5, 521–528.Google ScholarPubMed
Hsü, H. F. and Hsü, S. Y. L., 1959.—“Characteristics of geographic strains of Schistosoma japonicum in the final hosts.” Proc. VI Inst. Congr. Trop. Med. Malar., Lisbon, 2, 58–66.Google Scholar
Hsü, H. F. and Hsü, S. Y. L., and Ritchie, L. S., 1955.—“Epidemiological study on Schistosomiasis japonica in Formosa.” Am. J. Trop. Med. Hyg., 4, 1042–1048.CrossRefGoogle ScholarPubMed
Hsü, H. F. and Hsü, S. Y. L., and Ritchie, L. S., 1960.—“Infectivity of the Philippine strain of Schistososna japonicum in Oncomelania hupensis, O. formosana and O. nosophora.” J. Parasit., 46, 793–796.CrossRefGoogle ScholarPubMed
Hubendick, B., 1958.—“Factors conditioning the habitat of freshwater snails.” Bull. Wld Hlth Org., 18, 1072–1080.Google ScholarPubMed
Hunter, G. W. III, Ritchie, L. S. and Otoni, Y., 1952.—“A comparison of the infectivity of Schistosoma japonicum occurring in Japan for Oncomelania nosophora and Oncomelania formosana.” J. Parasit., 38, 492.CrossRefGoogle ScholarPubMed
Jordan, P. and Webbe, G., 1969.—In Human Schistosomiasis, p. 19. William Heinemann Medical Books : London.Google Scholar
Kartman, L., 1953.—“Factors influencing infection of the mosquito with Dirofilaria immitis (Leidy, 1856).” Expl Parasit., 2, 27–78.CrossRefGoogle Scholar
Kartman, L., 1957. “The vector of canine filariasis: A review with special reference to factors influencing susceptibility.” Rev. brasil. malariol., 5, 1.Google Scholar
Kozar, Z. and Kozar, M., 1965.—“A comparison of the infectivity and pathogenicity of Trichinella spiralis strains from Poland and Kenya.” J. Helminth., 39, 19–34.CrossRefGoogle ScholarPubMed
Le Roux, P. L., 1954.—“The infection of laboratory-bred specimens of Bulinus (Pyrgophysa) forskalii from Gambia with an Egyptian strain of Schistosoma haematobium.” Trans. R. Soc. trop. Med. Hyg., 48, 5.Google Scholar
Le Roux, P. L., 1961.—“Some problems in bilharziasis in Africa and the adjoining countries.” J. Helminth., (R. T. Leipe suppl.), 117–126.CrossRefGoogle Scholar
Macdonald, W. W., 1962a.—“The selection of a strain of Aedes aegypti susceptible to infection with semiperiodic Brugia malayi.” Ann. trop. Med. Parasit., 56, 368–372.CrossRefGoogle Scholar
Macdonald, W. W., 1962b.—“The genetic basis of susceptibility to infection with semiperiodic Brugia malayi in Aedes aegypti.” Ann. trop. Med. Parasit., 56, 373–382.CrossRefGoogle Scholar
Malek, E. A., 1950.—“Susceptibility of the snail Biomphalaria boissyi to infection with certain strains of Schistosoma mansoni.” Am. J. trop. Med., 30 887–894.CrossRefGoogle ScholarPubMed
Manson-Bahr, P. H., 1912.—Filariasis and elephantiasis in Fiji, being a report to the London School of Tropical Medicine. 192 pp.Google Scholar
Manson-Bahr, P. H., 1952.—“The clinical manifestations and ecology of Pacific filariasis.” Documenta Med. Geog. trop., 4, 193–204.Google ScholarPubMed
Manson-Bahr, P. H., and Muggleton, W. J., 1952.—“Further research on filariasis in Fiji. (A study of host-parasite relationships, with special reference to the status of the Pacific filaria, Wuchereria pacifica).” Trans. R. Soc. trop. Med. Hyg., 46, 301–326.CrossRefGoogle Scholar
McCullough, F. S., 1957.—“A preliminary note on the degree of compatibility between Schistosoma haematobium and its bulinid vectors.” W. Afr. Med. J., 6, 98–100.Google ScholarPubMed
Nelson, G. S., 1964.—“Factors influencing the development and behaviour of filarial nematodes in their arthropodan hosts.” In: Symposium of the British Society for Parasitology (2nd) 1963. Ed. Taylor, A. E. R. :Blackwell Scientific Publications: Oxford. pp. 75–119.Google Scholar
Nelson, G. S., Blackie, E. J. and Mukundi, J., 1966.—“Comparative studies on geographical strains of Trichinella spiralis.” Trans. R. Soc. trop. Med. Hyg., 60, 471–480.CrossRefGoogle ScholarPubMed
Nelson, G. S., Blackie, E. J.Mukundi, J., Pester, F. R. N. and Rickman, R., 1965.—“The significance of wild animals in the transmission of cestodes of medical importance in kenya.” Trans. R. Soc. trop. Med. Hyg., 59, 507–524.CrossRefGoogle ScholarPubMed
Roubaud, E., 1937.—“Nouvelles recherches sur l'infection de moustique fièvre jaune par Dirofilaria immitis Leidy. Les races biologique de Aedes aegypti et l'infection filarienne.” Bull. Soc. Path. exot., 30, 511–519.Google Scholar
Saoud, M. F. A., 1965. “Comparative studies on the characteristics of some geographical strains of Schistosoma mansoni in mice and hamsters.” J. Helminth., 39, 101–112.CrossRefGoogle Scholar
Smyth, J. D., 1962.—“Lysis of Echinococcus granulosus by surface active agents in bile and the role of this phenomenon in determining host specificity in helminths.” Proc. roy. Soc. B., 156, 553–572.Google Scholar
Smyth, J. D., 1969.—“The biology of hydatid organisms.” In : Advances in Parasitology, vol. 7, 327–347. Ed. Dawes, Ben. Academic press: london and new york.Google Scholar
Smyth, J. D., and Haslewood, G. A. D., 1963.—“Some biochemical and immunological aspects of host-parasite relationships. The biochemistry of bile as a factor in determining host-specificity in intestinal parasites, with particular reference to Echinococcus granulosus.” Ann. N. Y. Acad. Sci., 113, 234–260.CrossRefGoogle Scholar
Smyth, J. D., Haslewood, G. A. D., and Smyth, M. M., 1964.—“Natural and experimental hosts of Echinococcus granulosus and E. multilocularis, with comments on the genetics of speciation in the genus Echinococcus.” Parasitology, 54, 493–514.CrossRefGoogle Scholar
Stunkard, H. W., 1957.—“Intraspecific variation in parasitic flatworms.” System. Zool., 6, 7–18.CrossRefGoogle Scholar
Walton, B. C., Winn, M. M. and Williams, J. E., 1958. “Development of resistance to molluscicides in Oncomelania nosophora.” Am. J. trop. Med. Hyg., 7, 618–619.CrossRefGoogle ScholarPubMed
Webbe, G., 1969.—“Progress in the control of schistosomiasis.” Trans. R. Soc. trop. Med. Hyg., 63, suppl.82–91.CrossRefGoogle Scholar
Webbe, G., and James, C., 1971.—“A comparison of two geographical strains of Schistosoma haematobium.” J. Helminth., 45, 271–284.CrossRefGoogle ScholarPubMed
Webster, E. H., 1946.—“Filariasis among white immigrants in Samoa.” Nav. med. Bull., 46, 186–192.Google ScholarPubMed
Wharton, R. H., 1960.—“Studies on filariasis in Malaya: Field and laboratory investigation of the vectors of a rural strain of Wuchereria bancrofti.” Ann. trop. Med. Parasit., 54, 78–91.CrossRefGoogle Scholar
Wright, C. A., 1967.—“The schistosome life-cycle.” In : Bitharziasis. Ed. Mostofi, F. K.. pp. 3–7. Springer Verlag : Berlin, Heidelberg. New york.CrossRefGoogle Scholar
Wright, C. A., and Bennett, M. S., 1967a.—“Studies on Schistosoma haematobium in the laboratory. I. A strain from Durban, Natal, South Africa.” Trans. R. Soc. trop. Med. Hyg., 61, 221–227.CrossRefGoogle Scholar
Wright, C. A., and Bennett, M. S., 1967b.—“Studies on Schistosoma haematobium in the laboratory. II. A strain from South Arabia.” Trans. R. Soc. trop. Med. Hyg., 61, 228–233.CrossRefGoogle Scholar