Furthermore, what's a doctor going to do for my cold or flu? I'd rather take the opportunity to drop by the pharmacy for some cough drops, fruit juice, and replace the battery in my thermometer.

Lest we forget, though, Mary Mallon was an asymptomatic carrier who didn't feel sick, needed to work, and wasn't about to call in sick. In fact she defied forcible and controversial quarantine measures.

So what's an asymptomatic carrier to do in 2023? Wear a mask?