I recommend vaccination for vulnerable adults and children especially for those that have significant comorbidities: obesity, heart disease, diabetes, asthma or other lung disease or if you live with someone in advanced age with 1 or more of above comorbidities or someone that is immunocompromised. If you have a natural exposure covid illness you are likely immune for 6-12 months compared to Booster shot efficacy waining more rapidly over 3 months. Consider confirmation PCR testing to help with possible proof of immunity in the future. Please note that the Pfizer vaccine was only effective in 12% of children ages 5-11 during the Omicron surge.
Wear a KN95 pr N95 mask when feeling sick or around the more vulnerable. Minimize indoor hangouts with multiple people you do not live with.
Follow a whole food, mostly plant-based diet minimizing sugar, conventional flours especially white flour, dairy products and animal source foods or stick organic grass fed, locally sourced meat. Let your animal source foods be a garnish to your meal not the main dish. Add a daily serving of a fermented food like sauerkraut/kimchee/unsweetened coconut yogurt, natto, tempeh. Make sure to look for these in refrigerated section of the market.
Have a positive stress management practice and optimize sleep. See Super 6 on Sleep and Stress Management tips.
Although the data is weak, this list of supplements may help boost your immune system:
Click below for comprehensive prevention tips from PCRM.org