Hmmmm....I don't know. What I do know is that Delta fucked my lungs up for a solid year until Omicron came through. It seemed like a cold, went into my lungs as a chest cold. Normal for me because I smoke. Then when the Omicron chest cold cleared up, I regained the majority of my lung capacity to pre-covid levels. Couldn't breathe for shit for an entire year. Now I'm back to normal. Take this with a grain of salt, but thats what happened to me.

Also...no vaxx