Nakita.id – Until now pandemic Covid-19 has not yet been declared abated completely.
The virus remained viable in human skin samples for about 9 hours, according to the study.
Meanwhile, the influenza A virus (IAV) strain remains alive on human skin for about 2 hours.
However, the two viruses on the skin can be quickly deactivated with a hand sanitizer or hand sanitizer.
The importance of washing hands
The findings underline the increasing importance of washing hands regularly or using cleaners to prevent the spread of Covid-19.
“This study suggests that SARS-CoV-2 may have a higher risk of contact transmission (ie transmission from direct contact) than IAV because the former is much more stable in human skin (than the latter),” write the authors in the paper.
Hand washing illustration
The findings support the hypothesis that proper hand hygiene is essential to preventing the spread of Covid-19.
The research is published in the journal Clinical Infectious Diseases on 3 October 2020.
Previously, researchers from the United States also analyzed how long SARS-CoV-2 could last on surfaces.
They found the virus could stay on copper for up to 4 hours, on cardboard for up to 24 hours, and on plastic and stainless steel for up to 72 hours.
For ethical reasons, examining how long the virus can stay on human skin is more complicated.
Researchers cannot simply put a potentially lethal virus sample in someone’s hands.
So for this new study, researchers from Kyoto Prefectural University of Medicine in Japan created a skin model using human skin samples obtained from an autopsy. Samples were collected approximately one day after death.
The authors note that even 24 hours after death, human skin can still be used for skin grafts.
That means most of its functions remain there for some time after death.
Thus, the collected sample can become a suitable model for human skin.
Lasts 9-11 hours
The skin samples found that SARS-CoV-2 lasted 9.04 hours. Meanwhile for influenza A virus for 1.82 hours.
When this virus mixes with mucus, mimicking the release of viral particles in a cough or sneeze, SARS-CoV-2 lasts longer, which is about 11 hours.
Both viruses can be turned off or inactivated by using a hand sanitizer containing 80 percent ethanol after 15 seconds.
The authors note that their study did not consider the “infectious dose” of SARS-CoV-2, the number of viral particles needed to give an individual infection from contact with contaminated skin.
So future research should also examine this question.
This article has been published on Kompas.com with the title: Study: Corona Virus Can Linger on Human Skin for About 9 Hours