Mycoplasma wenyonii infection in cattle

doi:10.1136/inp.e1550 Provenance: Commissioned and peer reviewed Ben Strugnell qualified from the Royal (Dick) School of Veterinary Studies in Edinburgh in 2002. He spent four and a half years in mixed practice in North Yorkshire before joining the Animal Health and Veterinary Laboratories Agency (AHVLA) – Thirsk, where his caseload centres mainly on sheep, cattle and pigs. He holds the RCVS certificate in pig medicine. In recent years, the number of reports describing a combination of clinical signs in cattle comprising pyrexia, hindlimb and/or udder oedema and prefemoral lymphadenopathy, consistently associated with Mycoplasma wenyonii infection, has increased. However, infection does not always appear to result in these typical clinical signs, and the factors leading to their manifestation have still to be fully elucidated. This article analyses the available evidence and suggests some options for diagnosis and management.