Canadian Anthrax Outbreak Worsens
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An anthrax outbreak that began in early July has claimed 687 animals and caused 147 premises to be quarantined in Saskatchewan, Canada, as of Aug. 25, according to the Canadian Food Inspection Agency (CFIA). The outbreak is the largest on record to ever hit Saskatchewan. In Manitoba, Canada, CFIA officials confirmed anthrax cases on 18 premises, with 126 dead animals reported.
According to CFIA veterinarians, more than 250,000 animals have been privately vaccinated and 18,000 were vaccinated by the Canadian government. Most of the farms under 30-day quarantines raise cattle, but other premises housing horses, swine, bison, and white-tailed deer have also been quarantined. Anthrax is zoonotic disease–meaning it can be transmitted to humans by an infected animal or animal product–caused by the bacterium Bacillus anthracis or its spores. The spores are highly resistant to harsh weather conditions, meaning B. anthracis can survive in the soil for years.
Although anthrax is not as common in horses, those that ingest spores usually develop a very high fever and show signs of colic and/or diarrhea. They might also develop difficulty breathing (dyspnea) and can develop swelling on the underside of the neck and chest.
Anthrax outbreaks often occur following heavy rains–which push long-hidden spores into new, more accessible locations–or drought, which causes animals to graze closer to the contaminated soil
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