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Home / Equine Research Bank / Vet Parasitol / Epidemiological study of the cystic echinococcosis in Morocc...
Veterinary parasitology2006; 137(1-2); 83-93; doi: 10.1016/j.vetpar.2006.01.003

Epidemiological study of the cystic echinococcosis in Morocco.

Abstract: The objectives of this epidemiological study on cystic echinococcosis (CE) in Morocco (2001-2004) were to update the prevalence of CE in different animal species living in the most important areas of the country and to collect protoscoleces and germinal layers for genetic research purposes. The post mortem inspection concerned 2948 sheep, 2337 goats, 618 cattle, 482 camels and 455 equines (325 horses, 60 mules and 70 donkeys) in five different regions: the Rif (Mediterranean coast and high mountains of the Rif), the Loukkos (Atlantic northwest plain), the center (Rabat and Casablanca regions), the Middle Atlas mountains and the south (arid and semi desert areas). The global CE infection prevalence rates obtained were 22.98% in cattle, 10.58% in sheep, 12.03% in camels, 17.80% in equines and 1.88% in goats. The infection rates were especially high in the Middle Atlas in cattle (48.72%) and in the Loukkos in cattle and sheep (37.61 and 31.65%, respectively). The majority of infected cattle (49.6%) and sheep (52.1%) had hydatid cysts in both liver and lungs. Except for cattle, the liver was more infected than lungs in all the other animal species. Animals more than 5 years old were the most infected in all species. The mean CE infection rates of these animals were about 56% in cattle, 40% in sheep, 20% in camels, 17.80% in equines and 7% in goats. These rates were much higher in the Loukkos (85% of cattle and 59% of sheep) and in the Middle Atlas (68% of cattle and 45% of sheep) than in the other regions. Results showed that Echinococcus granulosus is in an endemic steady state with no evidence of protective immunity in the intermediate hosts. The mean numbers of infections per year are 0.099 for cattle, 0.063 for sheep, 0.03 for camels and 0.010 for goats.
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Publication Date: 2006-02-10 PubMed ID: 16473466DOI: 10.1016/j.vetpar.2006.01.003Google Scholar: Lookup
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Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

The research article presents an epidemiological study conducted between 2001-2004 on the prevalence of cystic echinococcosis in various animal species in Morocco. The study found high rates of infection particularly in cattle and sheep, with the highest recorded in the Middle Atlas and Loukkos regions.

Methodology and Areas of Study

  • The study was conducted through post mortem inspection of numerous animals including 2948 sheep, 2337 goats, 618 cattle, 482 camels and 455 equines (comprising 325 horses, 60 mules and 70 donkeys).
  • The animals were sourced from five different regions in Morocco: the Rif, the Loukkos, the center, the Middle Atlas mountains and the south. These areas exhibit diverse ecological settings ranging from Mediterranean coast to arid and semi desert regions.

Infection Prevalence

  • The study found that the average cystic echinococcosis infection rates were 22.98% in cattle, 10.58% in sheep, 12.03% in camels, 17.80% in equines and 1.88% in goats.
  • Highest infection rates were observed in the Middle Atlas in cattle (48.72%) and in the Loukkos in cattle and sheep (37.61 and 31.65%, respectively).
  • Most of the infected cattle (49.6%) and sheep (52.1%) had hydatid cysts in both liver and lungs.
  • For all animal species except cattle, the liver was more infected than the lungs.

Age and Infection Rates

  • It was found that animals over 5 years were the most infected across all species, with mean infection rates being about 56% in cattle, 40% in sheep, 20% in camels, 17.80% in equines and 7% in goats.
  • These infection rates spiked in the Loukkos (85% of cattle and 59% of sheep) and in the Middle Atlas (68% of cattle and 45% of sheep) regions.

Final Observations

  • The results showed that Echinococcus granulosus, the parasite causing cystic echinococcosis, is in a steady state in Morocco and no evidence of protective immunity in the intermediate hosts was found.
  • Average number of infections per year were calculated as 0.099 for cattle, 0.063 for sheep, 0.03 for camels and 0.010 for goats.

The study provides important epidemiological data on the spread and prevalence of cystic echinococcosis in Morocco across various animal species and geographical regions.

Cite This Article

APA
Azlaf R, Dakkak A. (2006). Epidemiological study of the cystic echinococcosis in Morocco. Vet Parasitol, 137(1-2), 83-93. https://doi.org/10.1016/j.vetpar.2006.01.003

Publication

Veterinary parasitology
ISSN: 0304-4017
NlmUniqueID: 7602745
Country: Netherlands
Language: English
Volume: 137
Issue: 1-2
Pages: 83-93

Researcher Affiliations

Azlaf, Rkia
  • Department of Parasitology and Parasitic Diseases, Institut Agronomique et Vétérinaire Hassan II, BP 6202, Rabat-Instituts, Agdal, Rabat, Morocco. r.azlaf@iav.ac.ma
Dakkak, Allal

    MeSH Terms

    • Abattoirs
    • Age Factors
    • Animals
    • Camelus / parasitology
    • Cattle
    • Cattle Diseases / epidemiology
    • Cattle Diseases / parasitology
    • Echinococcosis / epidemiology
    • Echinococcosis / veterinary
    • Echinococcosis, Hepatic / epidemiology
    • Echinococcosis, Hepatic / parasitology
    • Echinococcosis, Hepatic / veterinary
    • Echinococcosis, Pulmonary / epidemiology
    • Echinococcosis, Pulmonary / parasitology
    • Echinococcosis, Pulmonary / veterinary
    • Echinococcus granulosus / isolation & purification
    • Equidae / parasitology
    • Geography
    • Goat Diseases / epidemiology
    • Goat Diseases / parasitology
    • Goats
    • Morocco / epidemiology
    • Prevalence
    • Risk Factors
    • Sheep
    • Sheep Diseases / epidemiology
    • Sheep Diseases / parasitology

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