Utilized and Environmental Microbiology (2022). DOI: 10.1128/aem.00504-22″ width=”800″ peak=”459″/>
Log10 (Nt/N0) reductions and 95% confidence intervals of phi 6, MHV, and TGEV on salmon, beef, pork, and hen at 4°C over 30 days. Phi 6 is measured in PFU/100 mL, and MHV and TGEV are measured in MPN IU/100 mL. Credit score: Emily S. Bailey et al, Utilized and Environmental Microbiology (2022). DOI: 10.1128/aem.00504-22
SARS-CoV-2 surrogates can survive on meat merchandise within the fridge or the freezer for as much as 30 days. These findings are revealed in Utilized and Environmental Microbiology, a journal of the American Society for Microbiology.
The analysis was carried out utilizing hen, beef, pork, and salmon, and surrogate viruses with spikes just like these on SARS-CoV-2, as surrogates, stated first creator Emily S. Bailey, Ph.D. The investigators saved the merchandise at each refrigeration (4 levels C, or 39.2 levels F) and freezer temperatures (-20 levels C, or -4 levels F).
“Though you won’t retailer meat within the fridge for 30 days, you may retailer it within the freezer for that lengthy,” stated Bailey. “We even discovered that the viruses may very well be cultured after [being frozen for] that size of time.” Bailey is assistant professor, Division of Public Well being, Faculty of Pharmacy and Well being Sciences, Campbell College, Buies Creek, NC.
The investigators undertook this analysis after studying that COVID-19 outbreaks have been occurring in Southeast Asia absent prior neighborhood transmission. Reviews from these communities “steered that packaged meat products, produced in areas the place SARS-CoV-2 was circulating, may have been the supply of the virus,” stated Bailey. “Our purpose was to analyze whether or not or not comparable viruses may survive on this setting.”
The analysis is vital as a result of SARS-CoV-2 can replicate inside the intestine, in addition to within the respiratory tract, stated Bailey.
Within the examine, the investigators used one RNA virus with a lipid envelop, and two animal coronaviruses, murine hepatitis virus, and transmissible gastroenteritis virus as surrogates.
All three viruses have beforehand been used as surrogates for SARS-CoV-2, usually with larger reductions of their numbers noticed at refrigeration than at freezing temperatures. The discount in numbers additionally various based on the meals merchandise used.
“Continued efforts are wanted to stop contamination of meals and meals processing surfaces, employee fingers, and meals processing utensils resembling knives,” the investigators wrote. Moreover, “the shortage of, or insufficient disinfection of those meals previous to packaging must be addressed.”
Emily S. Bailey et al, Persistence of Coronavirus Surrogates on Meat and Fish Merchandise throughout Lengthy-Time period Storage, Utilized and Environmental Microbiology (2022). DOI: 10.1128/aem.00504-22
American Society for Microbiology
Analysis suggests SARS-CoV-2 may survive for a month on refrigerated or frozen meat merchandise (2022, July 11)
retrieved 11 July 2022
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