An article on February 17, 2020 from The Beet suggests: the “5 Best Ways to Avoid the Coronavirus. None of Them Involves Wearing a Mask” by Lucy Danziger, Editorial Director and Chief Content Officer of The Beet.
“Nothing you put on the outside of your body (mask for instance) is as strong a defense as what you put in your body (healthy foods), since the best defense against any virus [the coronavirus] is your immune system. Your immune system is your best line of defense. A plant-based diet supports your immune system. Plants have phytochemicals and antioxidants that keep your body’s immune system functioning at its highest level. Plants give your body what it needs to help fight off infection.”
https://thebeet.com/5-best-ways-to-avoid-the-coronavirus-and-we-dont-mean-just-wearing-a-mask/