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Epidemiology of echinococcosis in Kazakhstan: an update


Abdybekova, A; Sultanov, A; Karatayev, B; Zhumabayeva, A; Shapiyeva, Z; Yeshmuratov, T; Toksanbayev, D; Shalkeev, R; Torgerson, Paul R (2015). Epidemiology of echinococcosis in Kazakhstan: an update. Journal of Helminthology, 89(6):647-650.

Abstract

Kazakhstan is highly endemic for echinococcosis. Both Echinococcus granulosus and E. multilocularis are distributed widely in the country. Official records of human cystic echinococcosis over the past 5-10 years suggest a stable incidence of approximately 800 – 1000 cases per year which is 5 cases per 100,000 per year. This followed a rapid increase in the incidence following the dissolution of the Soviet Union. Between 2007 and 2013, 5949 cases were reported in the national surveillance data. The prevalence in sheep, based on slaughter house studies suggests between 30 and 50% of sheep are infected with hydatid cysts whilst cattle have a prevalence of approximately 7%. Rural dogs have a high prevalence of infection of between 5 and 10% with shepherd dogs having prevalences of over 20%. G1 and G6/7 strains of E. granulosus have been isolated from dogs in Kazakhstan. Wolves are also infected with one prevalence estimate of approximately 20%
The incidence of human alveolar echinococcosis is less clear although estimates from Kazakhstani expatriates living in Germany and the hospital records of a single referral centre in Almaty suggest 34 or 130 cases per year (or an annual incidence of 0.20 or 0.76 cases per 100,000) respectively could be occurring in Kazakhstan. Studies suggest that in some rural dog populations the prevalence may be about 5%. The parasite is widely distributed in foxes and small mammals through much of Kazakhstan.

Abstract

Kazakhstan is highly endemic for echinococcosis. Both Echinococcus granulosus and E. multilocularis are distributed widely in the country. Official records of human cystic echinococcosis over the past 5-10 years suggest a stable incidence of approximately 800 – 1000 cases per year which is 5 cases per 100,000 per year. This followed a rapid increase in the incidence following the dissolution of the Soviet Union. Between 2007 and 2013, 5949 cases were reported in the national surveillance data. The prevalence in sheep, based on slaughter house studies suggests between 30 and 50% of sheep are infected with hydatid cysts whilst cattle have a prevalence of approximately 7%. Rural dogs have a high prevalence of infection of between 5 and 10% with shepherd dogs having prevalences of over 20%. G1 and G6/7 strains of E. granulosus have been isolated from dogs in Kazakhstan. Wolves are also infected with one prevalence estimate of approximately 20%
The incidence of human alveolar echinococcosis is less clear although estimates from Kazakhstani expatriates living in Germany and the hospital records of a single referral centre in Almaty suggest 34 or 130 cases per year (or an annual incidence of 0.20 or 0.76 cases per 100,000) respectively could be occurring in Kazakhstan. Studies suggest that in some rural dog populations the prevalence may be about 5%. The parasite is widely distributed in foxes and small mammals through much of Kazakhstan.

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Additional indexing

Item Type:Journal Article, refereed, further contribution
Communities & Collections:05 Vetsuisse Faculty > Chair in Veterinary Epidemiology
Dewey Decimal Classification:570 Life sciences; biology
610 Medicine & health
Language:English
Date:2015
Deposited On:14 Oct 2015 09:15
Last Modified:26 May 2017 07:03
Publisher:Cambridge University Press
ISSN:0022-149X
Additional Information:Copyright: Cambridge University Press
Publisher DOI:https://doi.org/10.1017/S0022149X15000425
PubMed ID:26160276

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