Pennance Tom, Ame Shaali M, Amour Amour Khamis, Suleiman Khamis Rashid, Cable Jo, Webster Bonnie L
Department of Life Sciences, Natural History Museum, Cromwell Road, South Kensington, London, SW7 5BD, United Kingdom.
School of Biosciences, Cardiff University, CF10 3AX, Cardiff, United Kingdom.
Curr Res Parasitol Vector Borne Dis. 2021 Oct 22;1:100056. doi: 10.1016/j.crpvbd.2021.100056. eCollection 2021.
is a parasitic trematode of ungulates transmitted by freshwater snails in Sub-Saharan Africa causing bovine intestinal schistosomiasis that leads to chronic morbidity and significant agricultural economic losses. The recently reported occurrence of infected with for the first time on Pemba Island (Zanzibar, United Republic of Tanzania) is a cause of concern for livestock/wildlife health and complicates the surveillance of . To confirm that local cattle are infected with , fresh faecal samples were collected from six adult cows surrounding two schistosomiasis transmission sites in Kinyasini, Pemba Island. Schistosome eggs were concentrated, egg hatching stimulated and miracidia were individually captured and identified by analysis of the partial mitochondrial cytochrome oxidase subunit 1 (1) and the partial nuclear internal transcribed spacer region (ITS1+5.8S+ITS2). Two miracidia were collected from one faecal sample with two 1 haplotypes, one matching 1 data obtained from cercariae, collected previously at the same site in Pemba, the other matching 1 data originating from coastal Tanzania. The findings conclude that transmission has been established on Pemba Island and is likely to have been imported through livestock trade with East Africa. Increasing the sensitivity of non-invasive diagnostics for bovine schistosomiasis, together with wider sampling, will enable a better assessment on the epidemiology of on Pemba Island.
是一种偶蹄目动物的寄生吸虫，由撒哈拉以南非洲的淡水蜗牛传播，可导致牛肠道血吸虫病，引发慢性发病并造成重大农业经济损失。最近报道在奔巴岛（坦桑尼亚联合共和国桑给巴尔）首次发现感染，这引起了对牲畜/野生动物健康的关注，并使的监测变得复杂。为了确认当地牛是否感染，从奔巴岛金亚西尼两个血吸虫病传播地点周围的六头成年母牛身上采集了新鲜粪便样本。血吸虫卵被浓缩，刺激卵孵化，毛蚴被单独捕获，并通过分析线粒体细胞色素氧化酶亚基1（1）的部分和核内转录间隔区（ITS1 + 5.8S + ITS2）进行鉴定。从一个粪便样本中收集到两个毛蚴，有两种1单倍型，一种与先前在奔巴岛同一地点收集的尾蚴获得的1数据匹配，另一种与源自坦桑尼亚沿海的1数据匹配。研究结果表明，在奔巴岛已经确立了传播，并且很可能是通过与东非的牲畜贸易传入的。提高牛血吸虫病非侵入性诊断的灵敏度，同时扩大采样范围，将有助于更好地评估奔巴岛的流行病学情况。
