一种新发机会性感染致病病原——蠊缨滴虫

A new opportunistic infectious pathogen Lophomonas blattarum

据国外文献报告，蠊缨滴虫是一种寄生于白蚁、蟑螂（包括森林树木中的蟑螂）肠道的单细胞原虫。20世纪末，国内陆续有从人呼吸道检出蠊缨滴虫的报道，近年来该类病例报道明显增多。部分免疫功能低下感染蠊缨滴虫的患者常需呼吸机辅助呼吸，常用抗生素治疗无效，及时应用甲硝唑类抗生素治疗可使肺部感染得以控制。根据现有的报道我们认为蠊缨滴虫所致呼吸道感染可能是一种新发的、人们尚未完全认识的机会性感染寄生虫病。

Lophomonas blattarum is a unicellular protozoa, a kind of parasites, living in termite and wood roach. Since the end of the 20th century, it has been occasionally reported that L. blattarum was found in the respiratory tract of human beings, however such reports have significantly increased these years. Some patients need the support of respirator to breath, and most of conventional antibiotics were ineffective for the infection. In clinieal practice, L. blattarum could be killed by urgent administration of metronidazole so as to control the lung infection caused by the protozoa. According to current reports, it is considered that the infection of respiratory tract by L. blattarum is a new opportunistic infectious disease that has not been fully understood yet.