I'm not a scientist, so this isn't making sense to me, but maybe someone can explain it to me. Researchers are finding antibodies in uninfected people that are also found in infected people as reactive to Covid. The thought is, people got those antibodies from other coronaviruses, like the common cold, and that may confer some immunity to Covid. Here's the thing: I get a cold twice a year. It's called the common cold because of how common it is. Why would we think those antibodies confer immunity from Covid when they can't even keep us from getting a cold?