Post Reply - What is the matter in Colorado ?

Puma concolor

   https://flutrackers.com/forum/forum/national-international-government-ngo-preparation-response/cdc/993867-cdc-rustrela-virus-in-wild-mountain-lion-puma-concolor-with-staggering-disease-colorado-usa or https://flutrackers.com/forum/forum/national-international-government-ngo-preparation-response/cdc/993867-cdc-rustrela-virus-in-wild-mountain-lion-puma-concolor-with-staggering-disease-colorado-usa ;
Page updated: July 15, 2024
Page reviewed: July 15, 2024

https://doi.org/10.3201/eid3008.240411

Karen A. Fox, Angele Breithaupt, Martin Beer, Dennis Rubbenstroth, and Florian Pfaff

Abstract

We identified a rustrela virus variant in a wild mountain lion (Puma concolor) in Colorado, USA. The animal had clinical signs and histologic lesions compatible with staggering disease. Considering its wide host range in Europe, rustrela virus should be considered as a cause for neurologic diseases among mammal species in North America.

On May 12, 2023, Colorado Parks and Wildlife (Denver, CO, USA) received a report of an ≈1-year-old free-ranging female mountain lion (Puma concolor) with signs of severe hind leg ataxia and paresis. The lion had been observed in a residential area of Douglas County, Colorado, USA (Appendix Figure 1). The animal was reluctant to rise and had markedly decreased capacity to move or bear weight on the hind end. 

The animal moved by pulling itself forward with the front legs, while minimally propelling itself forward with the hind legs (Video). The animal appeared depressed but was still responsive to stimuli. Wildlife officers tranquilized the animal and then euthanized it by gunshot to the chest to prevent destruction of neurologic tissues. We conducted a postmortem investigation including necropsy, histopathology, immunohistochemistry, molecular diagnostics, and metatranscriptome sequencing to investigate potential causes of the disease.

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