A genus of gram-negative bacteria in the tribe Klebsiellae, family Enterobacteriaceae. Includes K. mobilis (syn. Enterobacter aerogenes).
- K. pneumoniae — carried in the vestibule of the vagina, urethra and clitoridal fossa of the mare as normal flora, but invasion of the cervix and uterus does occur, causing metritis and infertility. An occasional cause of bovine mastitis, hematogenous osteomyelitis originating in pulmonary lesions in cattle, bronchopneumonia in dogs, and pyothorax in horses.



