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CDC releases ventilation guidance for curbing indoor respiratory virus spread
(www.cidrap.umn.edu)
In December 2019, a novel coronavirus strain (SARS-CoV-2) emerged in the city of Wuhan, China. This subreddit seeks to monitor the spread of the...
The actual CDC guidance:
https://www.cdc.gov/ncird/whats-new/ventilation-respiratory-viruses.html
I had looked into Merv13 for my home AC system but it seems like it is not recommended for the system unfortunately.