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Posted on: April 29, 2020

Fleas test positive for plague in Coconino County

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Coconino County Health and Human Services (CCHHS) officials confirmed that fleas collected in the Baderville area, northwest of Flagstaff, have tested positive for plague (Yersinia pestis).

Coconino County Health and Human Services (CCHHS) officials confirmed that fleas collected in the Baderville area, northwest of Flagstaff, have tested positive for plague (Yersinia pestis). Collecting and testing of fleas for the presence of plague was conducted by the Pathogen and Microbiome Institute at Northern Arizona University. 

CCHHS has notified area residents and the burrows were treated. The area will be closely monitored to determine if further action is required. 

This is the first location within the County where fleas have tested positive for plague this year. Because the disease is endemic in Coconino County, there are likely additional locations with infected fleas. CCHHS Environmental Health staff will continue to collect and test flea samples from locations throughout the County.

CCHHS is urging the public to take precautions to reduce their risk of exposure to this serious disease, which can be present in fleas, rodents, rabbits and predators that feed upon these animals. The disease can be transmitted to humans and other animals by the bite of an infected flea or by direct contact with an infected animal. To limit possible exposure, people are encouraged to avoid rodent burrows and keep dogs on a leash as required by Arizona State law.

An abundance of active prairie dogs doesn’t indicate disease is present. However, a sudden die-off of in prairie dogs and rodents, may be an indicator of plague. Persons noticing a sudden die-off of rodents or rabbits are urged to contact CCHHS Environmental Services at 928-679-8750.

Symptoms of plague in humans generally appear within two to six days following exposure and include the following:  fever, chills, headache, weakness, muscle pain, and swollen lymph glands (called “buboes”) in the groin, armpits or limbs. The disease can become septicemic (spreading throughout the bloodstream) and/or pneumonic (affecting the lungs) but is curable with proper antibiotic therapy if diagnosed and treated early. 

Persons living, working, camping or visiting in areas where plague and/or rodents are known to be present are urged to take the following precautions to reduce their risk of exposure:

Do not handle sick or dead animals.

Prevent pets from roaming loose. Pets can pick up the infected fleas of wild animals, and then pass fleas on to their human owners. This is one of the common ways for humans to contract plague. Cats with plague can also pass the disease on to humans directly thorough respiratory droplets.

De-flea pets routinely. Contact your veterinarian for specific recommendations.

Avoid rodent burrows and fleas.

Use insect repellents when visiting or working in areas where plague might be active or rodents might be present (campers, hikers, woodcutters and hunters).

Wear rubber gloves and other protection when cleaning and skinning wild animals.

Do not camp next to rodent burrows and avoid sleeping directly on the ground.

Be aware that cats are highly susceptible to this disease and while they can get sick from a variety of illnesses, a sick cat (especially one allowed to run at large outside) should receive care by a veterinarian for proper diagnosis and treatment to reduce human exposure to plague.

In case of illness see your physician immediately as treatment with antibiotics is very effective.

More information is available at https://www.cdc.gov/plague/.

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