Intestinal helminthiases in Ecuador: the relatíonship between prevalence, genetic, and socioeconomic factors

Cooper, Philip J.; E., Angel Guevara; Guderian, Ronald H.

doi:10.1590/S0037-86821993000300007

Abstracts

Prevalence of infection with the intestinal helminths, Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale and Strongyloides stercoralis was examinedin 632 residents of communities in Esmeraldas province of Ecuador. These communities were divided into two groups according to area of habitation which reflected different socioeconomic circumstances. Attempts were made to correlate infection status with race and ABO blood group phenotype. The racial groups included blacks, Chachi amerindians, and mixed-race mestizos. Greater prevalences of infection were seen in the area oflower socioeconomic status. No racial or blood group associations with helminth infection were seen controlling for socioeconomic status.

Helminth parasites; Race; ABO blood group phenotypes; Socioeconomic status

A prevalência de infecções com helmintos Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale e Strongyloides stercoralis foi examinada em 632 pessoas em diferentes comunidades na Região de Esmeraldas no Equador. Estas comunidades foram divididas em dois grupos conforme a área na qual residem, o que reflete diferentes circunstâncias sócio- econômicas. Intentou-se correlacionar os tiposde infecção com a raça e os grupos sanguíneos ABO. Nestes grupos raciais estão incluídos negros, ameríndios Chachi, e mestiços. Notou-se a prevalência de infecções nas áreas sócio-econômicasmais baixas. Não se encontrou nenhuma relação com a infecção helmíntica e raça ou grupo sanguíneo depois de controlar-se o status sócio- econômico.

Parasitos helmintos; Raça; Grupo sanguíneo ABO fenótipo; Status sócio-econômico

ARTICLES

Intestinal helminthiases in Ecuador: the relatíonship between prevalence, genetic, and socioeconomic factors

Philip J. Cooper; Angel Guevara E.; Ronald H. Guderian

^{Adress to correspondence} Adress to correspondence: Dr. Philip Cooper. Hospital Vozandes Casilla 17- 17-691 Quito, Ecuador.

ABSTRACT

Prevalence of infection with the intestinal helminths, Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale and Strongyloides stercoralis was examinedin 632 residents of communities in Esmeraldas province of Ecuador. These communities were divided into two groups according to area of habitation which reflected different socioeconomic circumstances. Attempts were made to correlate infection status with race and ABO blood group phenotype. The racial groups included blacks, Chachi amerindians, and mixed-race mestizos. Greater prevalences of infection were seen in the area oflower socioeconomic status. No racial or blood group associations with helminth infection were seen controlling for socioeconomic status.

Keywords: Helminth parasites. Race. ABO blood group phenotypes. Socioeconomic status.

RESUMO

A prevalência de infecções com helmintos Ascaris lumbricoides, Trichuris trichiura, Ancylostoma duodenale e Strongyloides stercoralis foi examinada em 632 pessoas em diferentes comunidades na Região de Esmeraldas no Equador. Estas comunidades foram divididas em dois grupos conforme a área na qual residem, o que reflete diferentes circunstâncias sócio- econômicas. Intentou-se correlacionar os tiposde infecção com a raça e os grupos sanguíneos ABO. Nestes grupos raciais estão incluídos negros, ameríndios Chachi, e mestiços. Notou-se a prevalência de infecções nas áreas sócio-econômicasmais baixas. Não se encontrou nenhuma relação com a infecção helmíntica e raça ou grupo sanguíneo depois de controlar-se o status sócio- econômico.

Palavras-chave: Parasitos helmintos. Raça. Grupo sanguíneo ABO fenótipo. Status sócio-econômico.

Full text available only in PDF format.

Texto completo disponível apenas em PDF.

Recebido para publicação em 01/03/93.

National Centre for Tropical Diseases - extension Quilo, Hospital Vozandes, Quito, Ecuador.

References

1. Bames GL, Kay R. Blood groups and giardiasis. Lancet 1:808, 1977.
2. Brown HW, Neva FA. Basic Clinical Parasitology, 5th edition. Appleton-Century Crofts, Norwalk, Connecticut p. 122-123, 1983.
3. Bundy D AP. Population ecology of intestinal helminth infections in human communities. Philosophical Transactions of the Royal Society of London 321:405-420, 1988.
4. Clemens JD, Sack DA, Harris JR, Chackraborty J, Khan MR, Huda S, Ahmed F, Gomes J, Rao MR, Svennerholm AM, Holmgren J. ABO blood group and cholera: new observations on specificity of risk and modification of vaccine efficacy. Journal of Infectious Diseases 159:770-773, 1989.
5. Cram EB. Studies on oxyuriasis. XXIV Comparative findings in the white and negro races. Proceedings of the Helminthological Society of Washington 7:31-35, 1940.
6. Forrester JE, Scott ME, Bundy DAP, Golden MHN. Predisposition of individuals and families in Mexico to heavy infection with Ascaris lumbricoides and Trichuris trichiura Transactions of the Royal Society of Tropical Medicine and Hygiene 84:272-276, 1990.
7. Guderian RH, Beck BJ, Proano SJR, Mackenzie CD. Onchocerciasis in Ecuador, 1980-1986: Epidemiological evaluation of the disease in the Esmeraldas Province. European Journal of Epidemiology 5:294-302, 1989.
8. Guderian RH, Guzman JR, Calvopina M, Cooper PJ. Studies on a focus of yaws in the Santiago Basin, Province of Esmeraldas, Ecuador. Tropical and Geographical Medicine 43:142-147, 1991.
9. Guderian RH, Leon LA, Leon R, CorralF, Vasconez C, Johnston TS. Reporton a focus of onchocerciasis of Esmeraldas province of Ecuador. The American Journal of Tropical Medicine and Hygiene 31:270- 274, 1982.
10. Guderian RH, Vargas GJ. Duffy blood group distribution and the incidence of malaria in Ecuador. Transactions of the Royal Society of Tropical Medicine and Hygiene 80:162-163, 1985.
11. Higgins DA, Jenkins DJ, Partono F. Timorian filariasis and ABO blood groups. Transactions of the Royal Society of Tropical Medicine and Hygiene 79:537-538, 1985.
12. Hill AVS. Mala ria resistance genes: a natural selection. Transactions of the Royal Society of Tropical Medicine and Hygiene 86:225-226,1992.
13. Keller AE, Leathers WS, Knox JC. The present status of hookworm infestation in North Carolina. American Journal of Hygiene 26:437-454, 1937.
14. Walton BC, Valverde L. Racial differences in espundia. Annals of Tropical Medicine and Parasitology 73:23-29, 1979.
15. Woodruff AW, Choyce DP, Muci-MendozaF, Hills M, Pettit LE. Onchocerciasis in Guatemala. A. Clinical and parasitological studies with comparasion between the disease there and in East Africa. Transactions of the Royal Society of Tropical Medicine and Hygiene 60:707-719, 1966.
16. World Health Organization. Basic laboratory methods in medical parasitology. World Health Organization, Geneva p.16-17, 1991.

Adress to correspondence:

Dr. Philip Cooper.

Hospital Vozandes

Casilla 17- 17-691

Quito, Ecuador.

Publication Dates

Publication in this collection
11 Apr 2013
Date of issue
Sept 1993

History

Received
01 Mar 1993
Accepted
01 Mar 1993

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

[1] 1. Bames GL, Kay R. Blood groups and giardiasis. Lancet 1:808, 1977.

[2] 2. Brown HW, Neva FA. Basic Clinical Parasitology, 5th edition. Appleton-Century Crofts, Norwalk, Connecticut p. 122-123, 1983.

[3] 3. Bundy D AP. Population ecology of intestinal helminth infections in human communities. Philosophical Transactions of the Royal Society of London 321:405-420, 1988.

[4] 4. Clemens JD, Sack DA, Harris JR, Chackraborty J, Khan MR, Huda S, Ahmed F, Gomes J, Rao MR, Svennerholm AM, Holmgren J. ABO blood group and cholera: new observations on specificity of risk and modification of vaccine efficacy. Journal of Infectious Diseases 159:770-773, 1989.

[5] 5. Cram EB. Studies on oxyuriasis. XXIV Comparative findings in the white and negro races. Proceedings of the Helminthological Society of Washington 7:31-35, 1940.

[6] 6. Forrester JE, Scott ME, Bundy DAP, Golden MHN. Predisposition of individuals and families in Mexico to heavy infection with Ascaris lumbricoides and Trichuris trichiura Transactions of the Royal Society of Tropical Medicine and Hygiene 84:272-276, 1990.

[7] 7. Guderian RH, Beck BJ, Proano SJR, Mackenzie CD. Onchocerciasis in Ecuador, 1980-1986: Epidemiological evaluation of the disease in the Esmeraldas Province. European Journal of Epidemiology 5:294-302, 1989.

[8] 8. Guderian RH, Guzman JR, Calvopina M, Cooper PJ. Studies on a focus of yaws in the Santiago Basin, Province of Esmeraldas, Ecuador. Tropical and Geographical Medicine 43:142-147, 1991.

[9] 9. Guderian RH, Leon LA, Leon R, CorralF, Vasconez C, Johnston TS. Reporton a focus of onchocerciasis of Esmeraldas province of Ecuador. The American Journal of Tropical Medicine and Hygiene 31:270- 274, 1982.

[10] 10. Guderian RH, Vargas GJ. Duffy blood group distribution and the incidence of malaria in Ecuador. Transactions of the Royal Society of Tropical Medicine and Hygiene 80:162-163, 1985.

[11] 11. Higgins DA, Jenkins DJ, Partono F. Timorian filariasis and ABO blood groups. Transactions of the Royal Society of Tropical Medicine and Hygiene 79:537-538, 1985.

[12] 12. Hill AVS. Mala ria resistance genes: a natural selection. Transactions of the Royal Society of Tropical Medicine and Hygiene 86:225-226,1992.

[13] 13. Keller AE, Leathers WS, Knox JC. The present status of hookworm infestation in North Carolina. American Journal of Hygiene 26:437-454, 1937.

[14] 14. Walton BC, Valverde L. Racial differences in espundia. Annals of Tropical Medicine and Parasitology 73:23-29, 1979.

[15] 15. Woodruff AW, Choyce DP, Muci-MendozaF, Hills M, Pettit LE. Onchocerciasis in Guatemala. A. Clinical and parasitological studies with comparasion between the disease there and in East Africa. Transactions of the Royal Society of Tropical Medicine and Hygiene 60:707-719, 1966.

[16] 16. World Health Organization. Basic laboratory methods in medical parasitology. World Health Organization, Geneva p.16-17, 1991.