My dad has symptoms of notorvirus and im scared if im going to catch it. how can i not catch whatever he has?

Norovirus: Norovirus is extremely contagious. Simple guidance of avoiding contact with him and whatever he contacts (dishes, door knobs, bathroom, etc) is necessary. Wash your hands thoroughly and don't stick you fingers in your mouth or rub your eyes which can transmit germs internally to you. Maintaining a healthy immune system with eating nutritiously and getting adequate sleep, avoiding stress too.