Multiple friends I was with tested positive, my wife had a fever and started feeling off. We went and got tested. Along with everyone but two people in that group tested positive. Funny enough the two people tested multiples time but were always negative. They lived with people that were positive and they joined us for COVIDgiving. (We all cancelled Thanksgiving with our families, so did it together). Those two people are also the biggest drinkers of the group - so maybe they are just immune, or alcohol kills the virus. Anyways to answer your question, yes the test results informed me, as well as about 10 more of us. I believed it because there was a large group of us that tested positive, a few people did lose taste, so everything kinda fell in line with what we knew. Re-affirming I have had it, is that I continually test positive for anti-bodies. (I donate blood on a regular basis).
I guess it depends what you consider large. Between my democratic family, my local friends on both political ends, friends all along up the east coast (including New York, in and out of the city) and out to the west coast, as well as people I have met while at the store, out boating, work, the bar, or wherever, that echo chamber equates to at least few hundred people. Pretty much all of them fall in line with my same thinking (for the record, I am almost never the one to bring it up, so there is no bias for them to agree with me). Of the people I do know personally and not just passing by, none are "loud". Assuming loud is defined something along the lines of a twitter SJW.
Also for the record, my very democratic (hate to go political but it helps understand the mind set) grandmother reached out to me about getting the vaccine. She has the same concerns as the general public, but I still recommended she receive it, because she is very high risk. Luckily she didn't have any issues (or she didn't tell us, which wouldn't be surprising lol)