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Outbreak Alert: Canine leptospirosis in Pima County

Thursday, May 25, 2017  
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The Arizona Department of Agriculture, Pima County Health Department, and Arizona Department of Health Services are reporting an outbreak of canine leptospirosis with at least 6 cases in Tucson. Most of the dogs are reported to have been exposed at a dog boarding/daycare facility, and it is likely that exposure is possible at other facilities or areas where dogs congregate. It is unknown if this is related to the Maricopa County outbreak. The canine leptospirosis outbreak in Maricopa County is still ongoing, with at least 70 canine cases. No human cases of leptospirosis have been confirmed at this time.


This is a reminder to keep leptospirosis on your differential for dogs who present with compatible clinical signs, especially if they are not vaccinated for leptospirosis, and to practice proper infection prevention/control measures with suspect or confirmed cases. Clinical signs can include fever, lethargy/weakness, anorexia, conjunctivitis, vomiting, and diarrhea. In more severe cases, acute kidney injury, liver damage/jaundice, and pulmonary complications can be seen.


State law requires that veterinarians report cases of leptospirosis in animals to the State Veterinarian.  Human cases of leptospirosis should be reported to the county health department.


For information about animal illnesses or to report canine cases please contact the State Veterinarian’s office at 602-542-4293.


For information about human illnesses please contact your county health department at: “

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