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Source: SARS-CoV-2 Spread   Mar 17, 2021  1 month ago
Coronavirus News: Chinese Researchers Warn That Cold-Chain Transport And Frozen Goods Can Help Spread SARS-CoV-2 Coronavirus
Coronavirus News: Chinese Researchers Warn That Cold-Chain Transport And Frozen Goods Can Help Spread SARS-CoV-2 Coronavirus
Source: SARS-CoV-2 Spread   Mar 17, 2021  1 month ago
Coronavirus News: Chinese researchers from Jilin University-China are warning that based on emerging studies and case reports, cold chain transport and frozen goods can help spread the SARS-CoV-2 coronavirus including across borders.

The research team published a letter in the Journal: Proceedings of the National Academy of Sciences.
The study team says that in light of growing evidence, SARS-CoV-2 virus transmission via contaminated surfaces, and in particular, frozen foods and products that are transported while keeping them at low temperatures, should be taken into account when devising prevention strategies.
The SARS-CoV-2 coronavirus is usually spread by airborne transport. When an infected person sneezes, coughs, talks, or breathes, the virus present in aerosol droplets can be transmitted. Hence, the main strategies to curb its spread have been social distancing and ensuring well-ventilated indoor spaces.
SARS-CoV-2 is stable on various surfaces for different times.
The novel coronavirus's half-life on plastic and stainless steel is about six hours. On the skin, the virus is stable for 96 hours at 22 °C and 14 days at 4 °C. Studies have shown that the virus can be isolated from surfaces such as glass, paper, and banknotes, up to 28 days after infection.
It has been found that the SARS-CoV-2 virus is very stable at low temperatures and can remain on the packaging of cold-chain products, and transportation of these products can lead to viral spreading.
A previous study had shown that livestock-processing plants are closely associated with local community transmission of COVID-19.
Yet another study , as well as reports from China recently, demonstrated that fomite transmission, especially cold-chain products contaminated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), acts as vectors for the transmission of COVID-19.
Numerous reports from China in the last few months indicate several infections, mainly asymptomatic, caused by imported cold-chain products. The live SARS-CoV-2 coronavirus was isolated from the packaging of imported-cold chain products in Qingdao, raising the possibility that trade may be causing virus spread.
The Taylor et al. study reported that livestock processing industries contribute significantly to SARS-CoV-2 transmission. For the United States, the authors estimated that for a county with the presence of livestock processing plants, excess COVID-19 cases were 6 to 8% of all the cases in the country, with the vast majority of cases occurring in people not working at the plants.
A key reason for the increase in transmission risk in livestock plants is the low indoor t emperature. After slaughter, the meat processing area is generally kept between 0 and 12 °C, which allows the virus to remain stable.
The Pastorino et al. study reported the stability of SARS-CoV-2 on a variety of surfaces. They found that the presence of a tiny protein in respiratory droplets that can prolong the life of the virus on many different surfaces. Thus, viruses in aerosol droplets from infected persons that settle on surfaces can stay alive, sometimes for more than four days, and transmit the virus when people contact the contaminated surfaces. .
These studies and reports provide growing evidence of how SARS-CoV-2 can be transmitted by trade, particularly when the transported goods are maintained at low temperatures.
The research team from Jilin University in China argues that livestock plants and cold-chain industries play a key role in virus transmission and should be taken into account when implementing COVID-19 prevention strategies.
Hence supervising meatpacking and scattered small-scale meat production could help disease prevention. The authors suggest that the environment in these plants and cold-chain industries should be tested regularly along with frequent disinfection. Imported cold-chain or frozen products should also be sampled and tested to identify any contaminated products and take control measures in time.
Also importantly, any personnel handling such goods should wear personal protective equipment, including masks and gloves. Such personnel should also be screened routinely for the virus. Wiping all frozen packages using disinfectant wipes may also be useful in eliminating the virus.
Thailand Medical News had previously covered on frozen foods being able to help transmit the SARS-CoV-2 virus.,-virus-can-survive-for-days-and-is-still-infectious
For more on SARS-CoV-2-spread and transmissions, keep on logging to Thailand Medical News.


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