A variety of companies like Windstar Cruises and Shake Shack have announced they are installing UV-C ultraviolet light systems in their air handlers. UV-C kills coronaviruses among other things and is increasingly used in hospitals and other venues.
Why not ask businesses to install UV-C air purification systems and allow them to fully re-open?
This UV technology is not new and was even used in the 1967 Star Trek episode "Operation Annihilate" to rid a colony of a pesky parasite. (Of course, Mr. Spock went blind because of this, but that's because he wasn't wearing proper UV filtering Ray-Bans.)