美洲钩虫

化疗控制美洲钩虫感染的效果和种群变化的研究

Studies on population dynamics and chemotherapeutic control of Necator americanus

表明海南系以美洲钩虫为主的两种钩虫混合感染流行区。

The result shows that Hainan Island is an endemic area of both species of hookworm with Necator americanus as the main species .

美洲钩虫及十二指肠钩虫细胞色素C氧化酶1基因测序

Sequencing of cytochrome c oxidase 1 gene of Ancylostoma duodenale and Necator americanus

方法应用PCR技术扩增美洲钩虫COI基因，并进行DNA测序和分子进化分析。

Methods COI genes of N.americanus were amplified from the genomic DNA by PCR and sequenced .

结论五省的美洲钩虫COI基因序列具有很高的相似性，但特定碱基位点仍存在一定差异。

Conclusion The COI gene sequences show high identity among the geographic isolates of N.americanus with some difference at specific nucleotide sites .

十二指肠钩虫和美洲钩虫在动物宿主体内发育各期的形态观察

Observations on the morphology of developing stages of Ancylostoma duodenale and negator americanus

江苏吴江市美洲钩虫种群调查及化疗研究

Investigation of the population of Nector americanus and the results of chemotherapy in Wujiang City , Jiangsu Province

6296例钩虫幼虫培养结果表明，赣南、宜春片系以美洲钩虫为主的两种钩虫混合感染地区，其十二指肠钩虫与美洲钩虫之比，依次为1∶2.1和1∶2.8；

Species identification revealed ratios of 1 ∶ 2.1 and 1 ∶ 2.8 for Ancylostoma duodenale versus Necator americanus , in Gannan and Yichun prefectures , respectively .

十二指肠钩虫第4期幼虫口腔的长宽几乎相等，但美洲钩虫宽大于长。

In the 4th stage larvae , the length of mouth cavity of A. duodenale is almost equivalent to its width , but that of N. americanus is shorter .

伊维菌素与阿苯哒唑对人钩虫感染者的治愈率分别为20.5%（9/44）和76.5%（26/34），对十二指肠钩虫较美洲钩虫敏感。

As for human hookworm , ivermectin and albendazole achieved 20.5 % ( 9 / 44 ) and 76.5 % ( 26 / 34 ) cure rate , respectively . The effect of ivermectin against Ancylostoma duodenale is more sensitive than that against Necator americanus .

为了解吴江市钩虫病流行病学特征并评价防治效果，开展了流行病学调查及监测。结果显示：吴江市为美洲钩虫和十二指肠钩虫的混合感染区，虫种及感染率有明显的地区分布特征。

To gain understanding the epidemiological characteristics of hookworm infection and evaluate the efficiency of controling measures , an epidemiological surveillance and investigation of hookworm infection was conducted in Wujiang city The results showed that it characterized by the mixed infection city with N americanus and A duodenale ;