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Peer-reviewed veterinary case report

Risk of tick paralysis in urban dogs near parks in Brisbane

By Gerasimova, Maria et al.·Published in Veterinary parasitology·2018·Sydney School of Veterinary Science, Australia·View original on PubMed

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Original publication title: Are recreational areas a risk factor for tick paralysis in urban environments?

Species:
dog

Plain-English summary

A study in Australia found that dogs can develop tick paralysis, a serious condition caused by toxins from tick bites, especially in urban areas with parks and natural vegetation. Between 2010 and 2017, researchers reported 1,650 cases of tick paralysis, with a significant number occurring in areas with more parkland. Most cases were identified in the spring, suggesting that this season poses a higher risk. Pet owners should be aware of these risk areas and consider preventive measures, such as using tick prevention treatments and regularly checking their dogs for ticks after visits to parks.

People also search for: dog tick paralysis prevention · tick treatment for dogs · why is my dog sick after park visit

Abstract

In Australia, tick paralysis in dogs (caused by a toxin in the saliva of Ixodes species during feeding) is a serious, distressing condition, and untreated it is often fatal. The aim of this study was to quantify the association between parkland (recreational or natural) in an urban area and the occurrence of canine tick paralysis. Brisbane, as a large urban centre located within the zone of paralysis tick habitat along the east coast of Australia, was selected as the study area. Postcodes selected for inclusion were those defined as being of an urban character (Australian Bureau of Statistics). The number of natural and recreational parkland polygons and total land area per postcode were derived. Tick paralysis case data for the selected postcodes were extracted from a national companion animal disease surveillance database. Between October 2010 and January 2017, 1650 cases of tick paralysis in dogs were reported and included in this study. Significant correlations were found between the number of reported cases per postcode and parklands: natural counts, 0.584 (P&#x202f;<&#x202f;0.0001); natural area, 0.293 (P&#x202f;=&#x202f;0.0075); recreational counts, 0.297 (P&#x202f;=&#x202f;0.0151); and recreational area, 0.241 (P&#x202f;=&#x202f;0.0286). Four disease clusters were also detected within the study area. All of these were located on the edges of the study area - either coastal or on the urban fringe; no clusters were identified within the core urban zone of the study area. Of the disease cases included in this study, strong seasonality was evidence: 68% of all cases were identified in spring. Within urban environments, areas of natural vegetation in particular appear to pose a risk for tick paralysis in dogs. This evidence can be used by veterinarians and dog owners to reduce the impact of tick paralysis by raising awareness of risk areas so as to enhance prevention via chemoprophylaxis and targeted searches of pet dogs for attached ticks.

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Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/29657015/