They bite not only animals but also human and cause you seriousitch.These parasites could cause the prevalence of typhoid fever and have grdat harm on human heaoth.
They bite not only animals but also human and cause you seriousitch.These parasites could cause the prevalence of typhoid fever and have grdat harm on human heaoth.
它们不仅叮咬动物，也会叮咬人类，令人瘙痒难忍。这种寄生虫曾引致世界上某些最危险的传染病，如伤寒、瘟疫等疾病，对人类的健康危害极大。