Anthrax in Horses
What is Anthrax?
Most people have heard of anthrax; it has been used as a biological weapon and a scare tactic in terrorism attacks during the early 2000s. Anthrax, caused by the bacterium Bacillus anthracis, is an infectious disease, and can prove fatal for horses (or humans, for that matter). There are legal ramifications surrounding anthrax, and when diagnosed, the veterinarian is obligated by law to report it to the appropriate government agency.
Symptoms and Types
The signs of anthrax infection depend on how the animal was infected. Horses most commonly are infected by either ingestion of anthrax spores, or via the skin from an insect bite.
When spores have been ingested:
Infection from insect bite:
The spore-forming bacterium Bacillus anthracis is the causative agent of anthrax. Horses most commonly become infected with this bacterium through ingesting spores in the soil. These spores are extremely resistant to heat, cold, and desiccation, and can survive in the environment for decades. Biting insects can also spread anthrax.
In order to diagnose anthrax, your veterinarian may take a blood sample from your horse. In most cases, anthrax is diagnosed upon the horse's death, as the bacteria produce lethal toxins that often work very fast. If anthrax is the suspected cause of death of an animal, that carcass should not be moved or opened up until the proper authorities have been notified. Anthrax is a disease that should be reported to the state veterinarian. If anthrax is diagnosed on your farm, the farm will be placed under quarantine and the remaining animals may be vaccinated against it.
Small structures that filter out the lymph and store lymphocytes
a condition in which an animal must be controlled in some manner in order to prevent a disease from spreading
The term for domesticated farm animals that are raised for work, wool, milk, and other products and uses. May include pigs, cows, horses, and poultry.
A medical condition in which the small intestines are inflamed
The presence of a disease within a given area
The singular form of the word bacteria; a tiny, microscopic organism only made up of one cell.
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