Would you care to elaborate?
https://www.healthline.com/health/food-nutrition/foods-that-boost-the-immune-system
lots of sites suggest the same immune boosting foods
1. Citrus fruits
• grapefruit
• oranges
• tangerines
• lemons
• limes
• clementines
2. Red bell peppers
3. Broccoli
4. Garlic
5. Ginger
6. Spinach
7. Yogurt
8. Almonds
9. Turmeric
10. Green tea
11. Papaya
12. Kiwi
13. Poultry
14. Sunflower seeds
15. Shellfish