I wash well when I come in.
I don’t go anywhere were there are large crowds.
I disinfect the shopping cart before I use it and my car when I get home.
I take a supply of nitrile or vinyl gloves with me and use them too, as an extra layer of protection. When I’m done with them, I peel them off so they are inside out and toss them on the car floor to clean up later.
When I get home, I sanitize the doorknobs and anything else I’ve touched when coming in.
A chain is as strong as its weakest link.