Sars-CoV-2 (the strain of the virus that causes Covid-19) remains active on the skin for nine hours, Japanese researchers have found who confirm the need to wash your hands frequently to fight against Covid-19. In comparison, the pathogen that causes influenza survives on the skin for about 1.8 hours, says study recently published in the journal Clinical Infectious Diseases, says AFP. The Japanese researchers tested skin samples taken from autopsy specimens about a day after death. The coronavirus and the influenza virus are both inactivated within 15 seconds by an application of ethanol, used in hand sanitizers and hydroalcoholic gels. “The longer survival of Sars-CoV-2 on the skin increases the risk of transmission by contact, but hand hygiene can reduce this risk,” said this study. It confirms the recommendations of the World Health Organization (WHO) for regular and thorough washing of hands in order to limit the transmission of the virus.