Berlin researchers develop UVC LEDs to fight coronaviruses In the joint CORSA project, SARS-CoV-2 and other respiratory viruses on surfaces and skin are to be deactivated by using UVC light. The project team is developing special UVC LEDs for this purpose and is investigating parameters such as wavelengths, irradiation doses and virus habitats. The German Federal Ministry of Education and Research is supporting the three-year project from 2021 with a total of three million euros. Like bacteria and fungi, viruses can be inactivated by UVC light. However, for the current coronavirus, no reliable data on the optimal wavelengths and irradiation doses have been available to date. This is to change with the CORSA project (Deactivation of SARS-CoV-2 by UVC light and tolerability for humans), which has commenced.