@eladar said
Yes we do know that. Deaths occur to due an autoimmune reaction.
Read up on it. Perhaps you do not know that, but it is known.
Sorry but I HAVE already looked it up and that is NOT known.
https://www.sciencemag.org/news/2020/04/how-does-coronavirus-kill-clinicians-trace-ferocious-rampage-through-body-brain-toes
"...Despite the more than 1000 papers now spilling into journals and onto preprint servers every week, a clear picture is elusive, as the virus acts like no pathogen humanity has ever seen.
...Without larger, prospective controlled studies that are only now being launched, scientists must pull information from small studies and case reports, often published at warp speed and not yet peer reviewed. “We need to keep a very open mind as this phenomenon goes forward,” says Nancy Reau, a liver transplant physician who has been treating COVID-19 patients at Rush University Medical Center. “
We are still learning.”
...
“There seems to have been a quick move to associate COVID-19 with these hyperinflammatory states. I haven’t really seen convincing data that that is the case,” says Joseph Levitt, a pulmonary critical care physician at the Stanford University School of Medicine.
...
Meanwhile, other scientists are zeroing in on an entirely different organ system that they say is driving some patients’ rapid deterioration: the heart and blood vessels.
..."
To cut a long story short, the studies have so far haven't told us exactly how the virus kills and there are conflicting theories amongst the experts with some thinking its an autoimmune reaction that kills while many others not convinced because the evidence for an autoimmune reaction is actually pretty poor and inconclusive; Its too early to tell.
So, you are wrong; its NOT known that "Deaths occur to due an autoimmune reaction".
To read more on that;
https://www.nature.com/articles/d41586-020-01056-7
"...How does COVID-19 kill?
Uncertainty over whether it is the virus itself — or the response by a person’s immune system — that ultimately overwhelms a patient’s organs, is making it difficult for doctors to determine the best way to treat patients who are critically ill with the coronavirus.
Clinical data suggest that the immune system plays a part in the decline and death of people infected with the new coronavirus, and this has spurred a push for treatments such as steroids that rein in that immune response. But some of these treatments act broadly to suppress the immune system, stoking fears that they could actually hamper the body’s ability to keep the viral infection in check.
..."