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Our new preprint on HVAC and SARS-CoV-2 is now up on MedRxiv and has been submitted for peer review. We identified SARS-CoV-2 RNA in the return air stream, on the 1st filter where fresh air and recirculated air mix, on the final MERV15 filter, and after the final MERV15 filter in the supply air on the supply air dampers. Next up: we are planning experiments to determine if findings are fragment RNA, intact viral particles, or viable particles, and what percentages of each at each location.


Read the preprint here:


Stay tuned for future updates.