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High temperature exposure critical in neutralizing Covid-19

Thu, 21/10/2021

New research submission shows that the SARS-CoV-2 virus, which causes Covid-19 can be neutralized by quick exposure to very high temperatures.

A recent article in the journal Biotechnology and Bioengineering gives more information on a new fluidics system developed by a team at A&M University, Texas, that measures the sub-second heat inactivation of coronaviruses.

In their research, the team used a mouse hepatitis virus (MHV) – a commonly used coronavirus model – and exposed it to a temperature of almost 72 degrees Celsius for half a second. The exposure reduced the viral titer by more than 100 000 times, and when exposed to 83 degrees Celsius, the titer reduced by more than 1-millon times, effectively rendering the virus inactive.

A&M University team spokesperson Yuqian Jiang says, “This is the first systematic study on how very short heat treatment time at various temperatures influences viral infectivity, through which we have identified for the first time the minimum temperature and exposure time required to inactive the infectivity of a coronavirus.

“This study provides essential data for the development of sub‐second CoV heat inactivation approaches, including methods to efficiently inactivate airborne CoVs indoors.”

Importance of environmental sterilisation processes

The transmission of SARS-CoV-2 viruses is primarily through contact with contaminated surfaces, via coughed or sneezed droplets and via airborne transmission. 

As such, environmental and device sterilisation are crucial in the battle to curb the spread of these viruses.

At AVM, we offer a range of services relating to the decontamination of reusable medical devices including decontamination and sterilization training, consultancy, equipment validation and authorisation services.

Contact us today to find out more. Call 01223 254499 or email info@avm-addenbrookes.org.

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High temperature exposure critical in neutralizing Covid-19