Cystic echinococcosis in Algeria: cattle act as reservoirs of a sheep strain and may contribute to human contamination

Bardonnet, Karine; Benchikh-Elfegoun, M. C.; Bart, Jean-Mathieu; Harraga, S.; Hannache, N; Haddad, Samir H.; Dumon, H.; Vuitton, DA; Piarroux, Renaud

doi:10.1016/s0304-4017(03)00255-3

Cited by 67 publications

(41 citation statements)

References 17 publications

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“…It is most probably attributed to the greater chance of exposure to more number of infective stages over longer duration of time in adult than young cattle and partially related to the longer period is required for cyst to develop. The findings of highest prevalence and largest number of hydatid cysts in the lungs than all the other organs followed by livers in our study are in agreement with several earlier reports (Kumsa 1994;Dalimi et al 2002;Bardonnet et al 2003;Daryani et al 2007;Zewdu et al 2010;Omer et al 2010;). This finding could be explained by the fact that livers and lungs possess the first great capillary sites encountered by the migrating oncospheres of this parasite during their portal vein route that are primarily subjected to hepatic and pulmonary filtering system before the involvement of any other peripheral organ (Kumsa and Mohammedzein 2012).…”

Section: Discussionsupporting

confidence: 83%

Cystic echinococcosis in cattle slaughtered at Gondar Elfora export Abattoir, northwest Ethiopia

2013

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A cross sectional and retrospective studies were conducted from November 2010 to April 2011 to determine the prevalence and characteristics of hydatid cysts in cattle slaughtered at Gondar Elfora Abattoir in northern Ethiopia. Out of the 308 cattle examined for the presence of hydatid cysts, 63 (20.5 %) of them were found harboring hydatid cysts in one or more of their internal organs. Results of the study showed higher (P \ 0.05) prevalence of cystic echinococcosis in adult (22.4 %; 49/219) than in young (15.7 %; 14/89) cattle. Lowest prevalence of hydatid cysts was observed in cattle from Debark (7.7 %; 2/26) whereas highest prevalence of cystic echinococcosis was recorded in cattle from Fogera (28.2 %; 11/39). The lungs (69.3 %; 61/88) were the most affected organs followed by the livers (28.4 %; 25/88). A total of 230 hydatid cysts from different internal organs of 63 infected cattle were differentiated into 60.4 % calcified, 30 % fertile and 9.6 % sterile cysts. Likewise, a total of 13 % (30/230) small, 15.6 % (36/230) medium, and 10.9 % (25/230) large hydatid cysts were recorded. Lung harbored the highest overall count (76.9 %; 177/230) and greatest proportion of large size cysts (13.5 %; 103/177) than all the other organs. Liver harbored the highest proportion of calcified cysts (68 %; 34/50). An overall proportion of 30 % (69/230) fertile cysts were recorded. The greatest proportion of fertile cysts (33.3 %; 59/177) was recorded in lungs followed by the livers (20 %; 10/50). A retrospective data of 5 years (2004/5-2009/10) revealed an overall prevalence of 30.4 % (9,106/29,951) and highest overall prevalence of 65.5 % hydatid cysts in the lungs followed by livers (33.5 %) and least in spleen (0.04 %). In conclusion the findings reported herein show that cystic echinococcosis is widespread in cattle slaughtered in Gondar export Abattoir and suggests that the lung is the most important source of hydatid cysts for definitive hosts in the area.

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Section: Discussionsupporting

confidence: 83%

Cystic echinococcosis in cattle slaughtered at Gondar Elfora export Abattoir, northwest Ethiopia

2013

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“…The infection rate in sheep from Tunisia (10.41%) was similar to the rate in the present study [5]. In Algeria, the infection rate in camels and cattle (24.8%; 13.9%, respectively) were higher than that in the present findings [17], meaning that the hydatid infection rates between countries in North Africa were similar, indicating that similar factors effect on the transmission of this disease between the farm animals for the different countries.…”

Section: Prevalence Of Variation Of Hydatid Cysts In Slaughtered Livecontrasting

confidence: 54%

Prevalence of Hydatid Cysts in Slaughtered Animals from Different Areas of Libya

Elmajdoub¹,

Rahman²

2015

OJVM

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The present study reports on the infection rates of hydatid cysts in both sexes and different age groups of sheep, camels and cattle from government abattoirs in different parts of Libya. An infection rate of 10.06% was recovered among 32,971 all ruminants (sheep, camels and cattle). Out 25314 of sheep, 2659 (10.52%) were infected. Out 7496 of camels, 940 (12.54%) were infected. Out 161 of cattle, 17 (10.56%) were infected. As regards to the infected organs, liver was seen to be the most commonly infected organ in sheep and cattle (46.03%; 52.94%, respectively), but in camels, it was the lung (55.21%). The fertility rates of hydatid cysts were 80% in sheep, 84% in camels and 0% in cattle. In sheep, the fertility rate of liver hydatid cysts was higher than that in other organs (53.85%), but in camels, the fertility rate in the lung was higher than that of other infected organs (66.7%). Thus, the incidence of echinococcosis in slaughtered livestock is noticeably high and denotes some hazards in control measures in Libyan abattoirs.

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“…Analysis of partial mitochondrial ND1 sequence data revealed a C/T change at position 195 in human, sheep and cattle isolates (HQ717151) that has been reported in many isolates from various parts of the world (including HM853645, DQ856470 and AF408688, among others) and from Turkey (13,(45)(46)(47). The co-occurrence of the 195 C/T and 288 T/C changes (HQ717152) has been previously noted [FJ796212 (22)].…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization of Human and Animal Isolates of Echinococcus granulosus in the Thrace Region, Turkey

Eryıldız¹,

Şakru²

2012

Balkan Med J

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Cystic echinococcosis in Algeria: cattle act as reservoirs of a sheep strain and may contribute to human contamination

Cited by 67 publications

References 17 publications

Cystic echinococcosis in cattle slaughtered at Gondar Elfora export Abattoir, northwest Ethiopia

Cystic echinococcosis in cattle slaughtered at Gondar Elfora export Abattoir, northwest Ethiopia

Prevalence of Hydatid Cysts in Slaughtered Animals from Different Areas of Libya

Molecular Characterization of Human and Animal Isolates of Echinococcus granulosus in the Thrace Region, Turkey

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