There's a strong relationship between Vitamin D and how badly someone is affected by it, but I've already deleted the link (too much web clutter). You want to take Vitamin D supplements, not having enough will make you really sick if you catch it without sufficient boosters.
I'm not very good about leaving the house and thereby exposing my skin to sunlight, despite the stern nagging from Mrs. Beebo. Fortunately, she spends a lot of time outside working on the yard and her garden, so I'm sure she's brimming full of Vitamin D. I have been taking Vitamin D supplements for years, however, so I'm hoping this is why I've remained unscathed so far.
This last week I drove into the office, for the first time in over 2 years, and inter-mingled with a half-dozen co-workers. No one was wearing a mask, but they're all vaccinated, so I threw caution to the wind and went unmasked as well. Such an odd feeling, not so much being unmasked as it was just sitting around talking to people after years of social isolation. I don't plan on going back anytime soon, if at all, so if I get to the end of this next week without covid symptoms, I'll have dodged the bullet from that experience.
One of the group that day caught covid very early on, back in 2020 before vaccines. I asked him how he's feeling now and he said mostly he's doing fine, but he does have a long covid taste damage. "It could have been worse, one of my friends had a heart attack from covid."