If you're sick, stay home.
If you attend a gathering, stay at least six feet away from other guests and preferably, wear a mask. If you can't stay six feet apart, always wear a mask, except when eating and drinking. If possible, hold the gathering outdoors.
Rather than serving food buffet style where guests use a single utensil to put food on their plates, have someone wear a mask, wash their hands thoroughly and serve the food to each person.
Wash your hands frequently. Use hand sanitizer frequently when soap and water aren't available.