Put me down as a skeptic of the weakening of COVID-19.virus. The way it has worked in the past is that a scary virus is out there that just poleaxes people. Then a mutated version shows up that leaves them walking around for a while. That strain is a much more effective spreader and crowds out the original. Problem is, COVID-19 is already an extremely effective spreader. A less lethal strain isn’t going to have much of an evolutionary advantage.
Excellent analogy to exposure to radiation. In theory, a single gamma ray photon could disrupt a cell’s DNA and turn it cancerous which then kills you. In much the same way, a single virus could infect you and lead to a full-blown case. Pragmatically though, that’s not how we live. Holding your exposure below a certain level is a realistic goal that usually leads to good outcomes — but never with a 100% certainty. Life is like that.
The question is not whether aerosols can stay airborne for long periods of time. I think that’s been known for a long time. The question, specific to COVID-19, is how long can the virus survive the oxygen levels and the dessication there. Don’t think we have an answer yet. On edit: my post seems to have gotten an automatic upvote so I downvoted it. Was that right?
I agree we all should watch the news conferences in their entirety although it’s hard for me. This might be something: https://www.newsweek.com/coronavirus-task-force-briefing-live-stream-sunday-how-watch-white-houses-latest-covid-19-1494891
“COVIDOMG!!” sounds pretty objective to me.