Anthrax is a biological agent (bacteria) that can cause severe human disease.
Its spores may be present in horse hair. Historically, in some countries, it was used in construction, usually as an addition to the mixture of plaster, and occasionally on ceilings to improve insulation.
Anthrax spores may remain viable for centuries in the plaster, posing a serious hazard to anyone exposed to it, even after many years of lying dormant within the fabric of the building.
Ultimately, horsehair plaster is strong, fire-resistant, and acts as a great sound barrier, but it presents a very serious risk, the contraction of anthrax.
Why are anthrax spores present in horse hair plaster a hazardous substance?
Anthrax spores remain in the plaster made with horse hair for many years and can cause a very serious health risk if exposure occurs.
If they come into contact with a cut or wound and enter the body through the injury, they produce poisons or toxins in the body and can cause very serious medical conditions and illness.
Additionally, spores can also enter the body when ingested and through being breathed.
Where can anthrax be found?
Anthrax spores present in horse hair plaster can be found in historical and old buildings, in its walls and ceilings, if the horse hair used to make the plaster when, decades ago the building was built, was infected.
Therefore, this is something that must be taken into account before the beginning of a demolition or restoration of this type of building, to protect the workers.
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This article can be found in the 2021 edition of the document. Find the full publication here:
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