Klebsiella pneumoniae subsp aerogenes

Escherichia coli and Klebsiella pneumoniae subsp, aerogenes produce acid from lactose on this medium, altering the colour of the indicator, and also adsorb some of the indicator which may be precipitated around the growing cells. The organisms causing typhoid and paratyphoid fever and bacillary dysentery do not ferment lactose, and colonies of these organisms appear transparent. 

Klebsiella pneumoniae subsp, aerogenes is found in the gut and respiratory tract of man and animals, and in soil and water. It may be distinguished from E. coli by a pattern of biochemical tests (Table 1.3). It can give rise to acute bronchopneumonia in humans but is not a common pathogen. 

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