Stay off faculty or work until the symptoms have stopped for 2 days. That is when you're most infectious.

How you get food poisoning
You can catch food poisoning if you happen to eat one thing that has been contaminated with germs.

Food poisoning symptoms can happen if meals:
- isn't cooked or reheated thoroughly - isn't saved appropriately - for example, it isn't been frozen or chilled - is left out for too lengthy - is handled by someone who's ailing or hasn't washed their arms - is eaten after its "use by" date

Any type of meals may cause food poisoning. Read tips to keep away from food poisoning.