A device developed by Sharp Corporation, equipped with Plasmacluster technology, which exposed an airborne novel coronavirus (SARS-CoV-2) to Plasmacluster ions for approximately 30 seconds, claims to have effectively reduced the infectious titer of the virus by more than 90%. This achievement was accomplished in collaboration with Professor Jiro Yasuda of the National Research Center for the Control and Prevention of Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, Professor Asuka Nanbo (a board member of the Japanese Society for Virology) of the same institution, Professor Hironori Yoshiyama of the Department of Microbiology, Shimane University, Faculty of Medicine (also, a board member of the Japanese Society for Virology), and Nagasaki University, an internationally respected authority on infectious diseases research.
The outbreak of Coronavirus disease (COVID-19) caused by the novel Coronavirus (SARS-CoV-2) was first reported in December 2019. By August 2020, this disease had already infected more than 25 million people and taken the lives of 840,000 individuals globally. This outbreak is an emergency faced by our society and made it necessary to take immediate countermeasures across a wide range of fields.
In 2004, Sharp demonstrated the effectiveness of Plasmacluster technology against feline (cat) coronavirus, a member of the Corona viridae family. In the following year of 2005, Sharp also demonstrated its effectiveness against the original SARS coronavirus (SARS- CoV), which caused the outbreak of 2002-2003 and is also genetically similar to the novel Coronavirus (SARS-CoV-2). Now, Sharp has demonstrated its effectiveness against SARS-CoV-2 in airborne droplets.
On the day of the launch, Dr Jiro Yasuda, Professor of National Research Center for the Control and Prevention of Infectious Diseases, Nagasaki University, said, “Disinfectants such as alcohol and detergents (surfactants) are well-known to be effective to reduce the risk of the virus on materials. However, for infection via aerosols (micro-droplets), there are few effective countermeasures such as a mask. Today, we demonstrated the effective inactivation of SARS-CoV-2 in airborne droplets by using Plasmacluster technology. We expect it would be useful to reduce the risk of infection in real spaces like offices, homes, medical facilities and vehicles too.”
Since 2000, Sharp has been demonstrating Plasmacluster technology’s effectiveness by working in collaboration with independent third-party research organizations around the world. So far, numerous independent research organizations have proven its clinical efficacy in suppressing the activity of harmful substances, including new pandemic influenza viruses, drug-resistant bacteria, and mite allergens and reducing bronchial inflammation levels in children with asthma.