作者分析了澳大利亚北部自来水中的Naegleria fowleri和一例死于原发性阿米巴脑膜炎的关系。嗣后又从家庭用水中分离出几种可疑的致病体。其中一次分离物定名PA90,经过免疫电泳试验指出它的抗原结构和澳大利亚原发性脑膜脑炎病例所分离出来的病原体以及比利时、捷克和美洲人的致病体都完全相同,证实了这一种阿米巴的抗原性在地理上是完全一致的。从病例分析发现有些感染是用水清洗鼻孔,或整个身体浸没在冷的洗澡水中或将整个头淹入水盆中而获得感染。另有二例于夏季长期无人居住的空屋内获得感染。在这些环境中,N.fowleri The authors analyzed the association of Naegleria fowleri in tap water in northern Australia with one case of primary amoebic meningitis. Subsequently, several suspicious pathogenic organisms were isolated from domestic water. One of the isolates was named PA90, and its antigenic structure was elucidated by immunoelectrophoresis as identical to the pathogens isolated from cases of primary meningoencephalitis in Australia and from the pathogens of Belgium, the Czech Republic and the Americans The antigenicity of amoeba is geographically identical. From the case analysis found that some infections are washing the nostrils with water, or the entire body immersed in cold bath water or flooding the entire head into the basin to get the infection. In the other two cases, infections were found in long uninhabited empty houses in summer. In these circumstances, N.fowleri