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The REHVA COVID-19 guidance has an update! The guidance 4.0 document focuses on how to reopen and safely use buildings after the lockdown, providing advice on specific components, buildings/space types, and suggesting mitigation measures.
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![](fileadmin/user_upload/Covid_calculator_Newsletter.png) A REHVA Calculator to estimate the effect of ventilation on COVID-19 airborne transmission developed by Prof. Jarek Kurnitski and the REHVA COVID-19 Task Force is available for download for experts with a minimum understanding of ventilation and air distribution or are enrolled in the REHVA COVID-19 course. ![](fileadmin/user_upload/newsletter_download_calculator.png) For all updates and new content follow our website Covid page!
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