What Are Prions?
What are prions? The word prion was coined in 1982 by neurologist Dr Stanley Prusiner, and is used to describe a proteinaceous infectious agent that is not inactivated or destroyed by procedures that modify nucleic acids such as deoxyribonucleic acid (DNA) or ribonucleicacid (RNA) Prions differ from other pathogens such as viruses, bacteria, fungi and parasites in that they do not contain deoxyribonucleic acid (DNA) or ribonucleic acid (RNA). They are also non-immunogenic – that is they do not elicit an immune response because the host has been rendered tolerant to the prion by the...
Read MoreMortality Composting and Pathogen Reduction
The traditional approach to mortality composting does not provide acceptable pathogen reduction capabilities when dealing with Specific Risk Material Composting by its very nature is not a very homogenous process and for this reason composting of Specific Risk Materials does not offer a truly reliable method of pathogen destruction. Multiple mechanisms are known to be involved in the inactivation of pathogens during composting. These methods may include exposure to heat, microbial antagonism, antibiotic production, parasitism, organic acid and ammonia production,competition for nutrients and...
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