I believe the operative word here is "known" underlying health condition. Many people have "conditions" which are not "known" until they act up and the person dies. For instance, many people have died for anurisms which were not known until they ruptured, the same with heart problems.
If it is true that underlying conditions contribute are the main cause of death, it seems like a very selective virus. IMO
I watched this video yesterday discussing underlying conditions, complications and blood clots that can occur while being on a ventilator. Also, how ventilator pressure being too strong causing lung injuries.
Dr. Cameron Kyle Seidel ER physician, Maimonides Medical Center, NY
"COVID positive patients need oxygen, they do not need pressure. They will need ventilators, but they must be programmed differently. I've talked to doctors all around the country and it is becoming increasingly clear, that the pressure we are providing may be hurting their lungs"
Pulmonologist Dr. Sam Parnia, MD, PhD at NYU Langone Health
"Dr. Parnia, what is your response to to the theory that the typical ways we use ventilators for pneumonia are doing more harm than good for COVID patients?"
" I think what we are realizing now, having taken care of hundreds of patients, this is really a unique disease, something we have never seen before. It's not the same as the the usual pneumonia, or other lung diseases we've taken care of. Therefore the ventilator and in fact all of their management has to be adjusted on a per patient basis, rather than just using traditional protocols that were developed for other conditions so-called ARDS, or other situations.
"Is this a lung disease causing blood problems, or is it a blood disease causing lung problems? How different is COVID-19 from what we have seen before?"
"COVID is affecting multiple organs, it's a really bizarre disease, systematic disease that happens to involve the lungs and other organs, particularly the kidneys. The blood is becoming thick and blood clotting is happening." (it continues in video. )
Discussed in video: dialysis machines, carbon monoxide poisoning, organ complications, Governor Cuomo and mortality rates
The video is 8 minutes. Dr. Sam Parnia is at the 2:40 mark