PAKISTAN
VETERINARY
JOURNAL
     
 
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Epidemiology of Bovine Hydatidosis: Urbanization, Dogs, Animal Care and Proximity to Slaughterhouses are Important Risk Factors for Cattle
 
Sakandar Khan1, Muhammad Younus2, Jo Cable3, Frank Hailer3, Asif Idrees2, Muhammad Imran Rashid1 and Haroon Akbar1*
 

1Department of Parasitology, Faculty of Veterinary Science, University of Veterinary and Animal Sciences (UVAS) Lahore, Pakistan
2Deparment of Pathobiology, College of Veterinary and Animal Sciences, Narowal, Sub-campus, University of Veterinary and Animal Sciences, Pakistan
3Organisms and Environment, School of Biosciences, Cardiff University, CF10 3AX, Wales, UK
*Corresponding author: drharoonakbar@uvas.edu.pk

Abstract   

Cystic echinococcosis, a neglected tropical disease caused by Echinococcus granulosus, is of One-Health importance. The disease has significant impact on the economy of Pakistan, where livestock is an important pillar of farming. Given the large socio-economic and zoonotic importance of cattle, we explored echinococcosis prevalence in livestock, focusing on three previously little-studied districts of Punjab (Narowal, Sheikhupura and Sialkot), Pakistan. We screened in total 1168 slaughtered cattle for presence of hydatid cysts. The collected hydatid cysts were subjected to microscopy, histopathology, and PCR. Overall disease prevalence was 7.7% (n=1168), significantly higher in Narowal (9.6%) than in Sheikhupura (7.6%) and Sialkot (5.7%). The oldest cattle group (>5 years) had significantly higher prevalence (11.8%) than younger animals (6.8% in 3-5-year and 4% in 1-3-year-olds). Females had significantly higher prevalence (9.1%) than male (4.9%) cattle. Significantly more cysts occurred in cattle lungs (71.4%) rather than the liver (28.5%), and the number of fertile cysts was significantly higher in lungs (56.9%) compared to liver (50%). PCR and sequencing of one cyst confirmed the species to be Echinococcus granulosus, with phylogenetic analysis clustering our ND1 sequence with the G1-G3 lineages. We found hydatid cysts to cause histopathological changes in the host tissue surrounding the cysts, including atrophy, fibrosis, cell degeneration and leucocytic infiltration. General Linear Models revealed that animals (cattle and dogs) kept near slaughterhouses, particularly in urban and semi-urban areas, significantly increased the risk of cystic echinococcosis in cattle. Based on these findings, we recommend a public health campaign to increase awareness of zoonotic infections.

To Cite This Article: Khan S, Younus M, Cable J, Hailer F, Idrees A, Rashid MI and Akbar H, 2023. Epidemiology of bovine hydatidosis: urbanization, dogs, animal care and proximity to slaughterhouses are important risk factors for cattle. Pak Vet J, 43(3): 507-514. http://dx.doi.org/10.29261/pakvetj/2023.055

 
   
 

ISSN 0253-8318 (Print)
ISSN 2074-7764 (Online)



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