2009
DOI: 10.1016/j.trstmh.2009.04.017
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High genetic polymorphism among Giardia duodenalis isolates from Sahrawi children

Abstract: Human giardiasis, the gastrointestinal infection caused by two genetically different groups (or assemblages) of Giardia duodenalis, is very common worldwide, and its prevalence is higher in developing countries. However, few surveys in these regions have been performed to include a genetic characterization of the parasite, which is necessary to unravel the complex epidemiology of the infection. In this work, we screened 120 faecal samples collected from Sahrawi children in 2003-2005, and found 41 (34.2%) of th… Show more

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Cited by 53 publications
(42 citation statements)
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“…The prevalence of each assemblage varies from country to country, and the genotype B seems more common overall,even though no strong conclusion can be drawn from current data. 3,27 Sprong et al 28 stated that Giardia assemblage B occurs predominantly but not exclusively in humans. In their study, they found assemblage B in other animals such as cats, bovines, sheep and pigs.…”
Section: Discussionmentioning
confidence: 99%
“…The prevalence of each assemblage varies from country to country, and the genotype B seems more common overall,even though no strong conclusion can be drawn from current data. 3,27 Sprong et al 28 stated that Giardia assemblage B occurs predominantly but not exclusively in humans. In their study, they found assemblage B in other animals such as cats, bovines, sheep and pigs.…”
Section: Discussionmentioning
confidence: 99%
“…The samples were collected in Italy from both residents (n ϭ 7) and immigrants (n ϭ 4) and from a group of African children of the Saharwi population (19). The samples were from asymptomatic and symptomatic patients of both sexes, with ages from 1 to 59 years.…”
Section: Methodsmentioning
confidence: 99%
“…In various Asian countries (Bangladesh, Cambodia, China, India, Indonesia, Laos, Malaysia, Nepal, Philippines, Thailand, Turkey, Saudi Arabia, and Vietnam), North America (Cuba, Mexico, and Nicaragua), South America (Argentina, Brazil, Colombia, and Peru), and Africa (northern Africa, west Africa, and South Africa), most of the studies focused on children, and infection rates for G. duodenalis fell into the range of 8% to 30% in the majority of those studies (12,29,56,62,63,65,69,144,160,166,174,184,186,202,203,229,234,237,239,252,253,281). In a few studies, the infection rate was lower than 4% or higher than 30% (65,137,145,230,243,274,280). High infection rates for giardiasis were also reported for adults in developing countries, with rates of 25.1% in pregnant women in Minatitlan, Mexico (224); 11.7% in adults in Settat, Morocco (72); and 5.0 to 14.0% in African refugees and new immigrants in the United States, the Netherlands, and Spain (167).…”
Section: Public Health Importance Of Giardiasismentioning
confidence: 99%