I have to pile on a bit here -- every time I've ever worked in any form of food service, if someone was even suspected of being sick, he/she was sent home immediately. I definitely would not have eaten that food.

[Side story -- I ordered a sub at a subway by my house and noticed that the guy (we'll just say he was not originally from the USA) was not wearing any head covering and had quite a few strange white flakes of something all over his hair. Once I realized this, I told him I simply changed my mind and walked out and have never returned. That's the way I handle people with bad hygiene or who are sick and working in food service..]