One of my friends got Covid. So did his wife and son. However, their daughter didn’t get it. She must have a strong immune system.
Years ago my kids and my husband went down like dominoes with influenza. They were miserably sick and I didn’t want to catch it. An acquaintance told me to eat raw garlic as it’s anti viral. I did-a clove a day and I never caught it despite caring for five sick people in a small house.
When the shut down was looming this year I asked a doctor acquaintance about that. He said it was probably the vitamin C in the garlic. Vitamin C and D are so important in fighting all kinds of illnesses. Perhaps some people just have sufficient levels of C and D and are able to ward off this virus?