PDF(Pubmed)
Abstract：
BACKGROUND: Although ultrasonography (US) has been widely used in the diagnosis of human diseases to monitor the progress of cystic echinococcosis (CE) control, the screening method for hepatic CE in sheep flocks requires adjustment. In this study, we used a US scanner to screen sheep flocks and evaluated the efficacy of dosing dogs once a year with praziquantel for 7 years from 2014 to 2021.
METHODS: All sheep in the three flocks were screened using an ultrasound scanner in 2014 and compared with the prevalence of infection in 2021 in Bayinbuluke, Xinjiang, China. Sheep age was determined using incisor teeth. Cyst activity and calcification were determined using US images. The dogs were dewormed with praziquantel once a year to control echinococcosis in the community.
RESULTS: Three flocks had 968 sheep in 2014, with 13.22%, 22.62%, 18.7%, 27.27%, 11.88%, and 6.3% of sheep aged 1, 2, 3, 4, 5, and ≥ 6 years old, respectively. US scanning revealed that the overall CE prevalence was 38.43% (372/968), with active cysts and calcified cysts present in 9.40% (91/968) and 29.02% (281/968) of the sheep, respectively. For the young sheep aged 1 and 2 years, the prevalence of active and calcified cysts was: 1.56% and 0.91%, and 10.94% and 18.72%, respectively. Approximately 15.15% and 16.52% of the 4- and 5-year-old sheep, respectively, harbored active cysts. There was no significant difference in the infection rates of sheep between 2014 and 2021 (P > 0.05).
CONCLUSIONS: US is a practical tool for the field screening of CE in sheep flocks. One-third of the sheep population in the flocks was 1-2 years old, and these sheep played a very limited role in CE transmission, as most of the cysts were calcified. Old sheep, especially culled aged sheep, play a key role in the transmission of CE. Dosing dogs once a year did not affect echinococcosis control.
METHODS: All sheep in the three flocks were screened using an ultrasound scanner in 2014 and compared with the prevalence of infection in 2021 in Bayinbuluke, Xinjiang, China. Sheep age was determined using incisor teeth. Cyst activity and calcification were determined using US images. The dogs were dewormed with praziquantel once a year to control echinococcosis in the community.
RESULTS: Three flocks had 968 sheep in 2014, with 13.22%, 22.62%, 18.7%, 27.27%, 11.88%, and 6.3% of sheep aged 1, 2, 3, 4, 5, and ≥ 6 years old, respectively. US scanning revealed that the overall CE prevalence was 38.43% (372/968), with active cysts and calcified cysts present in 9.40% (91/968) and 29.02% (281/968) of the sheep, respectively. For the young sheep aged 1 and 2 years, the prevalence of active and calcified cysts was: 1.56% and 0.91%, and 10.94% and 18.72%, respectively. Approximately 15.15% and 16.52% of the 4- and 5-year-old sheep, respectively, harbored active cysts. There was no significant difference in the infection rates of sheep between 2014 and 2021 (P > 0.05).
CONCLUSIONS: US is a practical tool for the field screening of CE in sheep flocks. One-third of the sheep population in the flocks was 1-2 years old, and these sheep played a very limited role in CE transmission, as most of the cysts were calcified. Old sheep, especially culled aged sheep, play a key role in the transmission of CE. Dosing dogs once a year did not affect echinococcosis control.
摘要：
背景：尽管超声检查（US）已广泛用于人类疾病的诊断，以监测囊性包虫病（CE）控制的进展，羊群肝脏CE的筛选方法需要调整。在这项研究中,我们使用美国扫描仪对羊群进行了筛查,并评估了2014年至2021年期间每年一次给犬服用吡喹酮的疗效,持续7年.
方法：2014年使用超声扫描仪对三个羊群中的所有绵羊进行了筛查，并与2021年Bayinbuluke的感染率进行了比较，新疆,中国。使用门牙确定绵羊年龄。使用US图像确定囊肿活动和钙化。这些狗每年用吡喹酮驱虫一次，以控制社区中的棘球蚴病。
结果：2014年有三个羊群有968只羊，占13.22％，22.62%,18.7%,27.27%,11.88%，6.3%的1、2、3、4、5和≥6岁绵羊，分别。美国扫描显示，总体CE患病率为38.43%(372/968)，9.40％（91/968）和29.02％（281/968）的绵羊存在活动性囊肿和钙化囊肿，分别。对于1岁和2岁的小羊来说，活动性和钙化性囊肿的患病率分别为：1.56%和0.91%，10.94%和18.72%，分别。大约15.15%和16.52%的4岁和5岁的绵羊,分别,有活动性囊肿。2014年至2021年绵羊感染率差异无统计学意义(P>0.05)。
结论：US是用于绵羊群中CE的现场筛查的实用工具。羊群中三分之一的羊群是1-2岁,这些绵羊在CE传播中起着非常有限的作用，因为大部分囊肿都钙化了.老羊,尤其是被宰杀的老年羊，在CE的传播中起着关键作用。每年给狗一次剂量不会影响包虫病的控制。
方法：2014年使用超声扫描仪对三个羊群中的所有绵羊进行了筛查，并与2021年Bayinbuluke的感染率进行了比较，新疆,中国。使用门牙确定绵羊年龄。使用US图像确定囊肿活动和钙化。这些狗每年用吡喹酮驱虫一次，以控制社区中的棘球蚴病。
结果：2014年有三个羊群有968只羊，占13.22％，22.62%,18.7%,27.27%,11.88%，6.3%的1、2、3、4、5和≥6岁绵羊，分别。美国扫描显示，总体CE患病率为38.43%(372/968)，9.40％（91/968）和29.02％（281/968）的绵羊存在活动性囊肿和钙化囊肿，分别。对于1岁和2岁的小羊来说，活动性和钙化性囊肿的患病率分别为：1.56%和0.91%，10.94%和18.72%，分别。大约15.15%和16.52%的4岁和5岁的绵羊,分别,有活动性囊肿。2014年至2021年绵羊感染率差异无统计学意义(P>0.05)。
结论：US是用于绵羊群中CE的现场筛查的实用工具。羊群中三分之一的羊群是1-2岁,这些绵羊在CE传播中起着非常有限的作用，因为大部分囊肿都钙化了.老羊,尤其是被宰杀的老年羊，在CE的传播中起着关键作用。每年给狗一次剂量不会影响包虫病的控制。
