The hepatitis a virus can best be detained how

You can get a vaccination to help avoid getting Hep A

Also you should avoid food and water that have been touched by people with hep a, because the virus can spread through contaminated foods. Btw, you can also catch the virus from contact with someone with hepatitis a.

also, you should wash your hands often, especially after touching stuff like restaurant bathroom doorknobs, the safety rails on the side of stairs, bubble gum/toy dispensers, office light switch, etc