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August's top picks from JFMS  

Tuberculosis due to Mycobacterium bovis in pet cats associated with feeding a commercial raw food diet
Mycobacterium bovis, a member of the Mycobacterium tuberculosis complex, can infect cats and has proven zoonotic risks for owners. Infected cats typically present with a history of an outdoor lifestyle and hunting behavior, and cutaneous granulomas are most commonly observed. This study, however, describes an outbreak of tuberculous disease commencing with six young cats, living exclusively indoors in five different households across England, being presented to separate veterinarians with a variety of clinical signs. Lifestyle investigations revealed the common factors between clusters to be that affected cats had mycobacterial infections speciated to M bovis, they were exclusively indoor cats and they were fed a commercially available raw food product produced by a single manufacturer. Other possible sources of exposure for these cats to M bovis, such as wildlife contact and access to raw milk, were explored and excluded, and the results provide compelling, if circumstantial, evidence of an association between the commercial raw diet of these cats and their M bovis infections.

A closer look at the health of cats showing urinary house-soiling (periuria): a case-control study
In the clinical context, spraying for marking purposes has long been distinguished from inappropriate urinary latrine-related behavior (latrining), with the former commonly involving urine deposited on vertical surfaces (or on significant horizontal spots) and the cat typically in a standing position, and the latter mostly characterized by large amounts of urine, usually on horizontal surfaces, with the cat in a squatting position. Successful management of either condition depends on the identification of medical factors that might be contributing to the problem; however, the evidence for the significance of medical problems in these cases is inconsistent. This study aimed to investigate the association between urinary tract disease and periuria by performing an in-depth medical evaluation of a series of cats from multi-cat households presenting with inappropriate latrining and spraying behavior alongside control subjects drawn from the same household. The results indicated that spraying or latrining behavior in the home, as well as living with a cat that is not using the litter box as a latrine, are all associated with a higher level of urinary tract abnormalities. The results also suggest that both forms of periuria might be associated with cystitis. The authors therefore conclude that all cats with periuria need to be carefully evaluated medically and that treatment of latrine-related problems should be considered for all cats in the house, whereas spraying may be more focused on the individual displaying the problem.

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