I am sorry Caroline, but I am not going to accept covid-19 info as fact from a cookbook author, nomatter how nutritionally correct her recipes may be!
The about section from that link you posted gives her credentials:
About - Nourishing Traditions
Conspiracy theories abound right now, and suddenly everyone is an "expert".
I guess we will just have to respectfully agree to disagree on this, and I hope you will continue to be safe.