The BEST defense against illness and disease
(dis-ease) is a strong and healthy immune system. Each and every person can do the things mentioned in this meme. In addition do these things:
Exercise outdoors in the Sunshine (natural Vit D) & fresh air
Hydrate adequately with filtered alkaline water (filter out flouride too, not all filters remove flouride)
Spiritual enhancement via prayer, worship, study of God's word, build a personal relationship with God.
Reduce fear and anxiety
Practice good hand hygiene
Remove bacteria laden masks