I believe I had the first three iterations of the virus. The first was very early on in the con, before the illness even had a name. I was quite sick, and actually went to a doctor (which I rarely do) and told him I had the flu. He said "I don't know what you have, but it isn't the flu."
That first time, I was in a chorus that had a concert scheduled for late January 2020. I went to perform in the concert, obviously ill and even coughing, and my fellow chorus members thanked me for coming! Gone are the days of "the show must go on." Not surprisingly, NO ONE ELSE IN THE CHORUS, THAT I HAD BEEN SINGING WITH IN SMALL ROOMS, GOT ILL.
I refused to do any of the measures that we were being told to do: no masking, no isolation, no quarantine (other than staying home when I was sick and for a day afterwards, like we used to be told to do), no sanitizing, no testing, (the tests are crap shoots anyway, they show nothing), and especially no so-called vaccine.
I went on to get covid-like illness twice more, each time less difficult than the last. The third time I was mildly ill for three days.
At the time, I was 24/7 caring for a chronically very sick person. Even while very sick, fever and coughing and all, I entered his room unmasked, allowed others to enter his room unmasked, I cooked for him without sanitizing my hands. HE NEVER GOT SICK. The only difference between him and me is that he never ever went outside the house.
Have they been spraying overhead where you live? They have been here, and "covid" is back. It's not a virus.