title: Abattoir based surveillance of cystic echinococcosis (CE) in the Sultanate of Oman during 2010-2013.
abstract: A passive surveillance was conducted in 8 selected abattoirs belonging to 8 governorates of Oman. Routine slaughtering of 282.020 animals was observed during 2010-2013 by duty veterinarians and suspected samples (n=1440) for cystic echinococcosis (CE) from camels (n=292), cattle (n=303), goats (n=682) and sheep (n=163) were collected. In total, 587 (40.8%) samples were found positive for CE and the highest percentage (64.2%) of positive samples belonged to Dhofar (Salalah) as compared to other governorates, p<0.01. The infection rate of CE was calculated as 5.3, 0.6, 0.07 and 0.03 in camel, cattle, sheep and goats respectively. Fertile cysts were found in 30.7% of positive samples and camels (52%) were found as major source of these followed by cattle (14.1%) and goats (9.7%). Percentage of positive to submitted samples was higher in females (67.9%) than males (29.8%). The fertility of cyst increased with age and the highest percentage of fertile cysts were collected from animals above 5 years of age (54.4%) followed by between 3 and 5 years (36.7%) and below 3 years of age (8.9%). For different breeds, 478 (62.7%) samples from local breeds of livestock were positive for CE as compared to 108 (15.9%) from imported animals (OR 8.92), p<0.01. The highest percent of positive samples was observed in cysts from lungs (54.4%) followed by those from liver (25.7%), liver and lungs (14.1%) and others (3.8%). Molecular investigations indicated that G1 and G6/7 were the two strains of CE circulating in camels and cattle while G1 was the only strain found in samples from small ruminants. Results indicated that CE is endemic in the livestock of Oman and further molecular epidemiological work in different host species is required for the conceptualization of a comprehensive control program.
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Fadya Abdullah
authors.initials: FA
authors.lastname: Al Kitani
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Shumoos
authors.initials: S
authors.lastname: Al Riyami
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Sabra
authors.initials: S
authors.lastname: Al Yahyai
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Abdulmajeed Hamood
authors.initials: AH
authors.lastname: Al Rawahi
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Mahir
authors.initials: M
authors.lastname: Al Maawali
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Abdulmajeed Hamood
authors.initials: AH
authors.lastname: Al Awahi
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman.
authors.forename: Mahir
authors.initials: M
authors.lastname: Al Aawali
authors.affiliation: Animal Health Research Center, Ministry of Agriculture & Fisheries, Oman. Electronic address: m.hammad.hussain@gmail.com.
authors.forename: Muhammad Hammad
authors.initials: MH
authors.lastname: Hussain
mesh_terms: D000003:Abattoirs; D000375:Aging; D000818:Animals; D004443:Echinococcosis / Q000453:epidemiology / Q000662:veterinary*; D005260:Female; D015994:Incidence; D058751:Livestock; D008297:Male; D009850:Oman / Q000453:epidemiology; D011159:Population Surveillance
keywords: Echinococcus granulosus; Hydatid cyst; Livestock; Oman; Passive surveillance