Ive had the stomach flu last 2 days I have

Patient: Ive had the stomach flu last 2 days. I have stopped vomiting but still have diarrhea, headache, and fever. What should i do besides keeping myself hydrated. When can i go back to work safely? I work in a kitchen at a senior home of about 200 residents.

Symptoms: Headache, fever, diarrhea

Doctor: