the most disturbing indications are that immunity is very limited in duration which would make a vaccination moot.
That is a false narrative pushed by fear mongering media that is hyping the (real) threat of COVID-19. This is why I despise "pop-science" reporting. Science is not in the business of "proof". So ask a Doctor if it is POSSIBLE that this virus triggers an immune response in humans like none other ever seen before in a hundred thousand years of evolution, and they have to honestly say, "technically.. yes it is in the realm of possible". So the fear mongering media reports that "Doctors don't KNOW if anyone can ever be immune".
T-Cells produce antibodies that it "remembers" were effective at disabling this virus. If your body didn't reduce the the amount of antibodies it produces in response to every specific infection you ever have had in your life (including that little cut on your finger you never thought twice about) in absence of the infection, your immune system would spend all its time and energy producing unneeded proteins, wasting resources and flooding your blood with them for no reason.
ALL antibodies you can produce are produced in proportion to the associated viral load.
My wife and I had COVID-19 in March. Her case was much worse than mine - she almost needed hospitalization from the pneumonia that developed. We both saw several doctors... and continue to be treated by two.
Every doctor we asked the same question. "Are we immune from this strain of the virus, now that we have recovered"? 7 out of 7 doctors responded without hesitation, "of course you are. There is no reason at all to believe otherwise".
AS of 1 month ago, there were 2 CONFIRMED (out of, what, 8 million infected people?), valid reports of "reinfection". the first one was a guy from China that caught the two different strains of the virus... which is impossible unless you travel between the US and China in a time machine. and the second one was someone with a compromised immune system (not AIDS, but something else I never heard of).
There were a handful of other early reports of "reinfection", but they remain unconfirmed, and my wife and I are POSITIVE that these poele experienced exactly what she and I experienced... 1 week of mild symptoms, followed by a week feeling like it passed, then 2 weeks of the symptoms coming back full force... which then either gets better (me) or progressively gets worse until medication (antibiotics and steroids) is taken, and works, or you die in the hospital. Either path, it is easy to feel like you experienced two different illnesses with a short time between.
We have been donating our Convalescent Plasma every month since July. Each donation is used to save the lives of up to 4 people on ventilators. It is our ANTIBODIES they extract and provide to others in need.
Now how could this work to save people if immunity wasn't real?