Here is a link for symptoms of zinc deficiency. One should understand that many of us are NOT CLINICALLY deficient, but are less then fully healthy or resistant to disease. One of the first signs, recently reported, that you have Covid-19 is loss of taste and sense of smell. This is also a symptom of zinc deficiency. I guess the first thing that the bug does is deplete your zinc. This is why I also recommend taking 1 or 2 grams of Vitamin C a day, 2000 to 4000 IU Vitamin D, and 1 or 2 good multivitamin/multimineral tablets.
https://www.healthline.com/health/zinc-deficiency
The local Sprouts is out of zinc, and has been for a week or so.