Covid is a highly infectious, airborne pathogen that spreads via the respiratory system and causes an all body disease, often with lasting damage. It can infect and damage all ages.
Vax. Mainly reduces severity. A good thing for everyone of all ages.
Air. It's airborne. Air hygiene is important.
Space. Most dangerous are indoor crowds. Avoid.
Mask. Good (FFP2/3) masks help reduce spread
Test. If you can't measure, you can't manage.
Isolate. When ill. No matter what the infectious illness.