阿米巴的致病是虫体和宿主相互作用，并受多种因素影响的复杂过程。溶组织内阿米巴的侵袭力主要表现

本病流行于全世界，多流行于热带和亚热带地区。其感染率高低与各地环境卫生、经济状况和饮食习惯等密切相关。在我国的分布一般农村高于城市，近年来由于我国卫生状况和生活水平的提高，急性阿米巴痢疾和脓肿病例，除个别地区外，已较为少见。 1.传染源 慢性病人、恢复期病人及健康的带虫者为本病的传染源。 2.传播途径 溶组织内阿米巴的传播方式有以下几种：①包囊污染水源可造成该地区的暴发流行；②在以粪便作肥料，未洗净和未煮熟

Indications: - Asymptomatic cyst passers - In combination with tissue amoebicides for complete cure of amoebiasis - Anti-amoebic therapy, where: - Patients are allergic to nitroimidazoles. - Patients cannot tolerate the bad taste of nitroimidazoles. - Patients get moderate to severe GI disturbances with nitroimidazoles. - Patients are predisposed to CNS diseases, seizures or blood dyscrasias - Patient with recurrent amoebic colitis, where it is not safe to use nitroimidazoles repeatedly - Patient who are pregnant or lactating (After accessing risk-benefit ratio). - Intestinal amoebiasis. - In

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