tAn ultrasound-based survey for cystic echinococcosis (CE) in sheep was carried out in Sar-dinia in 2012. The study was done on three farms (A, B, C) which had been pre-selectedfor different CE prevalence levels (A: >80%, B: 50–80%, C: <50%). In total, 129 sheep wereexamined on the farms using portable ultrasound equipment (A: n = 51, B: n = 30, C: n = 48).Within a period of 20 days after ultrasound examination, all sheep were slaughtered andunderwent a parasitological post-mortem examination for cysts in the liver and lungs. Withpost-mortem as gold standard, ultrasonography gave a test sensitivity of 88.7% and a speci-ficity of 75.9%, while the positive and negative predictive values were 81.8% and 84.6%,respectively. When only sheep with fertile cysts were considered, the sensitivity of thetest increased to 100%. We conclude that the ultrasound examination of the liver in sheep– using state-of-the-art technology – is a sensitive and specific diagnostic tool, which iscost-effective, highly appropriate for field use and requires only moderate time (no shav-ing required). The method can also be applied to other livestock species and will be usefultool in epidemiological studies, monitoring schemes and vaccination/control trials

Ultrasound as a monitoring tool for cystic echinococcosis in sheep / Dore, F; Varcasia, Antonio; Pipia, Ap; Sanna, G; PINNA PARPAGLIA, Maria Luisa; Corda, Andrea; Romig, T; Scala, Antonio. - In: VETERINARY PARASITOLOGY. - ISSN 0304-4017. - 203:1-2(2014), pp. 59-64. [10.1016/j.vetpar.2014.03.016]

Ultrasound as a monitoring tool for cystic echinococcosis in sheep

VARCASIA, Antonio
;
PINNA PARPAGLIA, Maria Luisa;CORDA, Andrea
Membro del Collaboration Group
;
SCALA, Antonio
2014-01-01

Abstract

tAn ultrasound-based survey for cystic echinococcosis (CE) in sheep was carried out in Sar-dinia in 2012. The study was done on three farms (A, B, C) which had been pre-selectedfor different CE prevalence levels (A: >80%, B: 50–80%, C: <50%). In total, 129 sheep wereexamined on the farms using portable ultrasound equipment (A: n = 51, B: n = 30, C: n = 48).Within a period of 20 days after ultrasound examination, all sheep were slaughtered andunderwent a parasitological post-mortem examination for cysts in the liver and lungs. Withpost-mortem as gold standard, ultrasonography gave a test sensitivity of 88.7% and a speci-ficity of 75.9%, while the positive and negative predictive values were 81.8% and 84.6%,respectively. When only sheep with fertile cysts were considered, the sensitivity of thetest increased to 100%. We conclude that the ultrasound examination of the liver in sheep– using state-of-the-art technology – is a sensitive and specific diagnostic tool, which iscost-effective, highly appropriate for field use and requires only moderate time (no shav-ing required). The method can also be applied to other livestock species and will be usefultool in epidemiological studies, monitoring schemes and vaccination/control trials
2014
Ultrasound as a monitoring tool for cystic echinococcosis in sheep / Dore, F; Varcasia, Antonio; Pipia, Ap; Sanna, G; PINNA PARPAGLIA, Maria Luisa; Corda, Andrea; Romig, T; Scala, Antonio. - In: VETERINARY PARASITOLOGY. - ISSN 0304-4017. - 203:1-2(2014), pp. 59-64. [10.1016/j.vetpar.2014.03.016]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/60962
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