He might be ok. Luckily he did not go home or to class or work, he did not pass it on to his grandpa or to an immunocompromised colleague/classmate. Because we are not locked down to the world. He could go out of the country, there was just a step holding him back a bit. A crucial step.
We do not have that extra strep currently with local transmission. We do have layers of safety like masks and distancing. Do we need to play again the images of two people masked interaction and how if both parties, sick and not sick are masked, that reduces transmission? Viral load also plays a part. You protect and get protected with a simple thing. Is that not better than not wearing anything?