Corona preventing.

Any infection fears for clean, thus a keeping rules for hygiene, as regular washing hands, fresh air at the room, cleaning, thermic manufacturings are products and these are methods doing for epidemy surviving. Active working immunity will resist for new, mutating corona variant. As a healthy life mode, a healthy meal of vegetables, fruits, sour milk, and avoiding bad habits are better working, than immune modulators pills.
And do not risk, and not visit countries where is a risk for corona getting and on epidemy time you need to keep hygiene as individual care of respiratory mask between peoples as at a shop, markets, and hand antiseptic.