Some well known pathogens that trigger inflammation include mycoplasma pneumonia, herpes and dengue viruses, and schistosomiasis, which is a parasitic disease.

一些已知的引症的因素包括支原体肺、与登革热病毒、以及由寄生虫引的血吸虫病等。

There are also more unusual bacteria like mycoplasma pneumoniae, chlamydophila pneumoniae, and legionella pneumophila, which don't have a cell wall and are well known for causing an " atypical or walking pneumonia" because they often cause vague symptoms like fatigue.

还有一些更的细菌，如肺支原体、肺衣原体以及嗜肺军团菌，它们没有细胞壁，且因引“非典型肺”而臭名昭着，因为它们通会引一些模糊的症状，如疲劳。