Covid is highly contagious.
It’s airborne. Floats in the air & hangs for hours, like measles. You can show up later & get infected.
It’s incredibly damaging to the human body. Especially if you are infected over & over.
The vaccines are amazing. And yet, they do not prevent vaccinated people from being infected & contagious.
Many infectious people have no symptoms at all.
The rapid home tests have an incredibly high rate of false negatives. A negative test does NOT mean you don't have it.