Coronavirus can withstand prolonged exposure to high temperatures. This conclusion was made by French scientists from the University of Aix-Marseille under the leadership of Professor Remy Charrel, writes SCMP.
During the study, the French team infected African green monkey kidney cells with a strain isolated from a patient from Berlin. Cells were loaded into test tubes representing two different types of medium — one “clean” and the other “dirty” —with proteins of animal origin to simulate biological contamination in real samples, such as an oral swab.
During the experiment in the laboratory, scientists consistently raised the temperature, studying the behavior of different types of new type of coronavirus strains. It turned out that some strains were able to reproduce inside organisms even when heated to 60 degrees Celsius, while this temperature was kept for an hour.
In a clean environment, viral strains at this temperature were completely deactivated. To completely destroy all strains of the virus in a dirty environment, scientists had to heat them to 92 degrees Celsius and keep it for at least 15 minutes. However, such high temperatures can seriously alter the RNA of viruses, which will reduce the effectiveness of existing tests for coronavirus, the study said.
A few months ago, scientists hoped that the beginning of summer in the northern hemisphere would reduce the activity of the virus, as is the case with other types of coronavirus. However, studies show that humidity and temperature do not affect the effectiveness of a new type of coronavirus.