How should i prevent getting a stomach bug?

Hygine: Wash hands, keep your hands away from your mouth; prepare all your food yourself, only eat/drink from known sterile/clean sources.

To avoid Stomach: Flu > Wash your hands before touching your eyes, nose or mouth. Wash wi warm water & soap for 20 seconds. Hand-sanitizer doesn't kill Norovirus. Use paper towel to turn off faucet & open door when exiting a public restroom. Antiseptic wipes can be used on doorknobs, keyboards & other surfaces if diluted bleach is not available. Wash dishes in dishwasher (vice hand-washing). Clean clothes which