Inactivation of H‐type and L‐type bovine spongiform encephalopathy following recommended autoclave decontamination procedures

Autor: Sarah R. Walker, Peter C. Griffiths, Jemma K. Thorne, Marion Simmons, Katy E. Beck, Christopher M. Vickery, Gail E. Chapman, Linda A. Terry, John Spiropoulos, Cristina Casalone, Richard Lockey, Leigh Thorne, Lucien van Keulen, Mark Arnold
Rok vydání: 2020
Předmět:
040301 veterinary sciences
animal diseases
Bovine spongiform encephalopathy
transmissible spongiform encephalopathie
H-type
Autoclave
Incubation period
0403 veterinary science
03 medical and health sciences
mental disorders
medicine
Bioassay
inactivation
bovine spongiform encephalopathy
L-type
030304 developmental biology
Host Pathogen Interaction & Diagnostics
Infectivity
0303 health sciences
General Veterinary
General Immunology and Microbiology
Chemistry
Bacteriologie
food and beverages
Bacteriology
Bacteriology
Host Pathogen Interaction & Diagnostics

04 agricultural and veterinary sciences
General Medicine
Human decontamination
medicine.disease
Virology
Host Pathogen Interactie & Diagnostiek
nervous system diseases
Titer
Specified risk material
Bacteriologie
Host Pathogen Interactie & Diagnostiek
Zdroj: Transboundary and Emerging Diseases 67 (2020) 5
Transboundary and Emerging Diseases, 67(5), 1872-1878
ISSN: 1865-1682
1865-1674
DOI: 10.1111/tbed.13513
Popis: The resistance of H-type and L-type BSE prions to autoclaving under EU regulation conditions for specified risk material is unknown. We employed transgenic mouse (bovinized line tg1896) bioassay to assess the efficacy of such decontamination on L- and H-type BSE. For each source, titre calculation was based on the comparison of incubation period and attack rate prior to and after decontamination. The infectious titre of L-type BSE was reduced by at least 9.40 log10 and of H-type BSE by at least 3.94 log10. In fact, no infectivity was detected for L-type or H-type BSE post-inactivation even at a 10–1 dilution.
Databáze: OpenAIRE
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