在传统上,虽然所用的参数不一致,但还是基于血吸虫虫卵形态,其中间宿主和地理分布以确定血吸虫的系统发生关系,并由此将重要的人体血吸虫分成曼氏血吸虫、埃及血吸虫、日本血吸虫三类以及研究较少的分布在斯里兰卡、印度和东南亚的血吸虫列为第四类,这种分类法尚有不少疑点。目前,由 Traditionally, the parameters used were not consistent but were based on Schistosoma japonicum egg morphology, its intermediate host and its geographical distribution to establish the phylogenetic relationship of Schistosoma japonicum, and thus the important human schistosomiasis was divided into Schistosoma mansoni, Schistosoma haematobium, Three types and less studied Schistosoma japonicum distributed in Sri Lanka, India and Southeast Asia as the fourth category, there are many doubts about this taxonomy. At present, by