Klebsiella spp

From Cow
Medium-sized greyish colonies on agar, characteristic of Klebsiella spp

Klebsiella spp are a group of Gram-negative bacteria which cause mastitis and teat sores in cattle worldwide. This group of bacteria are skin commensals and part of the normal intestinal flora[1].

Species which are known pathogens in cattle include:

These bacteria are sensitive to penicillins, enrofloxacin and ceftiofur.


  1. Munoz MA & Zadoks RN (2007) Short communication: Patterns of fecal shedding of Klebsiella by dairy cows. J Dairy Sci 90(3):1220-1224
  2. Bhatt VD et al (2012) Milk microbiome signatures of subclinical mastitis-affected cattle analysed by shotgun sequencing. J Appl Microbiol 112(4):639-650
  3. Verbist B et al (2012) Sources other than unused sawdust can introduce Klebsiella pneumoniae into dairy herds. J Dairy Sci 94(6):2832-2839