Opteev's ViraWarn tabletop device detects the presence of respiratory viruses, including COVID-19 and flu, inside a closed space. ViraWarn consists of a silk-based biosensor that attracts the electrical discharge of respiratory viruses. The silk-based biosensor is made up of thin silk fibers coated with an electrically conductive material. When the virus comes into contact with the silk fibers, the discharge of the virus is detected by the conductive material. If a respiratory virus is found, the LED lights on the device are activated, and an alarm is played to alert people of the virus' presence. The biosensor can be replaced once it has detected viruses multiple times.
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