A bacterium considered an emerging pathogen in humans has been linked to a serious lung infection in a horse in Italy. The details of the horse’s illness are described in a case report just published in the journal BMC Veterinary Research. The 17-year-old saddle horse was found to be infected with Klebsiella variicola. The researchers believe it is the first time K. variicola has been identified as the cause of respiratory disease in a horse. The bacterium was first isolated in Mexico in 2004, initially being identified as an endophyte in soil and plants such as bananas, rice, sugar cane and maize.