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Studies of the epidemiology of human strongyloides stercoralis infection at endemic foci in Jamaica: clustering of cases - abstract
West Indian med. j ; 38(Suppl. 1): 28, April 1989.
Artigo em Inglês | MedCarib | ID: med-5693
Biblioteca responsável: JM3.1
Localização: JM3.1; R18.W4
ABSTRACT
The distribution of enteric parasites in the population is governed by a number of factors which may be both intrinsic and extrinsic in nature. While over-dispersion of intestinal helminths among indiciduals in the host population has recently attracted much interest, the spatial distribution of cases in the community has received comparatively little attention. The object of this study was to investigate the spatial distribution of cases of strongyloidiasis at Jamaican endemic foci, and to seek correlations between the presence of infection and socio-economic demographic and biomedical critieria. The home environments of 24 clinical cases of S. stercoralis infection were visited, and all the inhabitants requested to submit two consecutive stool samples for parasitological analyses. Duplicate, standard formol-ether concentration and Harada and Mori coproculture was used. Information on socio-economic isolation controls for the reference households (n=15) as well as the eleven control units (n=51). There were analysed for anti S. sterocoralis filariform IgG, using ELISA. The survey revealed at least one (and as many as three), additional case of strongyloidiasis in seven (19 percent) of the reference household; there were four instances of common infection among spouses, and an additional four among genectically related individuals in the same household. There was no parasitological evidence of infection among the inhabitants of the control units. However, serological investigations indicated no significant differences (Fisher's Exact Test) in the apparent level of exposure of individuals inhabiting the four reference households (25 percent) (index case excluded) and those occupying the control units (22 percent). Preliminary observations suggest a decline in the apparent level of exposure in the control households with increasing ambulatory distance from the reference dwelling. Presence of infection was not correlated with socio-economic index or host gender. Examination of the horizontal age-prevalence plot indicates no significant differences in infection prevalence between adults and children; the high levels of infection among the lower age groups is probably a function of the sensitvie diagnostic procedures utilized in this study. Current S. stercoralis infection appears to be familially distributed in the host community; identification of a single case of strongyloidiasis is likely to indicate the presence of a cluster of infected subclinical individuals at the same locus. Serological analyses suggest a high level of exposure to S. stercoralis in the host community, and sheds further light on the transmission of this potentially lethal parasitic infection (AU)
Assuntos
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Coleções: Bases de dados internacionais Contexto em Saúde: Doenças Negligenciadas / ODS3 - Meta 3.3 Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis Problema de saúde: Helmintíase / Doenças Negligenciadas / Zoonoses / Estrongiloidíase Base de dados: MedCarib Assunto principal: Estrongiloidíase Tipo de estudo: Estudo prognóstico / Fatores de risco / Estudo de rastreamento Limite: Humanos País/Região como assunto: Caribe Inglês / Jamaica Idioma: Inglês Revista: West Indian med. j Ano de publicação: 1989 Tipo de documento: Artigo / Congresso e conferência
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Coleções: Bases de dados internacionais Contexto em Saúde: Doenças Negligenciadas / ODS3 - Meta 3.3 Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis Problema de saúde: Helmintíase / Doenças Negligenciadas / Zoonoses / Estrongiloidíase Base de dados: MedCarib Assunto principal: Estrongiloidíase Tipo de estudo: Estudo prognóstico / Fatores de risco / Estudo de rastreamento Limite: Humanos País/Região como assunto: Caribe Inglês / Jamaica Idioma: Inglês Revista: West Indian med. j Ano de publicação: 1989 Tipo de documento: Artigo / Congresso e conferência
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