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While at 20 ° C the particles last 28 days, at 40 ° C they can be extinguished in less than 24 hours.
SARS-CoV-2 can survive up to four weeks on various surfaces, researchers at the Commonwealth Scientific and Industrial Research Organization (CSIRO) in Australia determined.
“With initial viral loads broadly equivalent to the highest titers excreted by infectious patients, viable virus was isolated during up to 28 days at 20 ° C on common surfaces like glass, stainless steel and paper and polymer banknotes“Reads an article by CSIRO scientists published in the Virology Journal on Wednesday.
At the same time, the researchers confirmed that the lifetime of the virus depends on the surface temperature. So, at 40 ° C the same viral load is extinguished on some surfaces in less than 24 hours, indicates the study.
Regarding the half-life, it is between 1.7 and 2.7 days at 20 ° C and a few hours at 40 ° C.
The head of the CSIRO, Dr. Larry Marshall, emphasized that the results of the study will contribute to contain the pandemic.
“Determining how long the virus is actually viable on surfaces allows us to more accurately predict and mitigate its spread and better protect our people,” Marshall was quoted as saying in a statement from the organization.
For his part, Trevor Drew, director of the Australian Center for Disease Preparedness (ACDP, for its acronym in English), who also participated in the study, indicated that there are many factors on which the survival of covid-19 depends.
“The time that [las partículas del virus] They can survive and remain infectious depends on the type and amount of virus, surface area, environmental conditions and how it is deposited, for example by contact or by droplets emitted by coughing. Proteins and fats in body fluids can also significantly increase virus survival times, “explained Drew.
