That virus is some bad stuff. Friends daughter currently being treated but now improving. Watch what you eat, where you eat it and above all practice good hygiene. His daughter is a fanatic about all that stuff and she still got it.
It’s not just about food contamination. You can pick it up off something like a doorknob if an infected person has touched it.
FWIW, I think I’d try to be careful where I eat, opt for stuff I can fix myself, but make darn sure to thoroughly wash my hands during the day, especially before they get anywhere near my mouth. :-)
I know elderly people who isolate themselves during a regional flu or virus outbreak, and
buy food and supplies online using a credit card so that they won't be overly exposed.
Even this presupposes that the employee that packed your food and supplies hasn't already come down with the flu or virus.
But the older you are, and more vulnerable by other medical issues, you limit your exposure as best you can.