I've been interested in this story, since I believe I had an early strain of it in January, and by June they'd already identified 3 strains of covid around the world. So, I was worried that even if I had antibodies, would they be the right kind. It seems the antibodies don't last very long anyway. We just don't know enough about it.

Interesting point that he is asymptomatic which then begs the question, whether asymptomatic positives can be carriers or not. I'm not still not even sure if that has been established or not.

From what I've learned, the asymptomatic positives simply had experienced a lower viral load, and therefore didn't get sick. But then wouldn't they not be as strong a carrier than someone who was symptomatic?

Good point, that isn't that what herd immunity is roughly? A large part of the population having been exposed to a low dose of it, so not enough to get sick, but perhaps enough to have antibodies? However with covid anti-bodies only lasting 4-6 months they say, I'm not sure herd immunity could take place without a vaccine that is more effective than natural antibodies from prior infection.

There's so much I don't understand, and/or haven't been worked out about this virus.