Immune system boosters fruits ,food and vegetables such as vitamin c grapefruit,orange,tangerines,lemons,limes,clementines.Red bell peppers,broccoli,carrot,garlic,ginger,spinach,asparagus,yogurt,green tea,papaya,kiwi,chicken soup,sunflower seeds,avocado,tomato,oats,etc
Shellfish:crab
Clams
Lobster
Tuna
salmon

Eat green vegetables
Get vitamin D or sun burn
Keep exercising,body moving
Get enough sleep
Skip alcohol/smoking
Clam down mind
Social distance
Practice good hygiene
Keep it personal such as
Toothbrushes
Towel
Drinking water/lemon
healthy food
Stay hydrated.