... > objects > physical objects > inanimate objects > technical objects (physical objects) > weapons > weapons of mass destruction > biological weapons > bacteria > Chlamydophila pneumoniae infection

... > objects > physical objects > organic objects > organisms > microorganisms > microbes > bacteria > Chlamydophila pneumoniae infection

... > events and action > phenomena > biological phenomena > diseases > respiratory tract diseases > lung diseases > Chlamydophila pneumoniae infection