a lot of people are searching for ways to deal with this when they get the dreaded “you only have 3 of the 4 symptoms and your fever is only 100” ...so no COVID test for you. Go home.
That happened to a poster here with her grandson.
Here is one man’s story ( a lung DR) who would have died if he hadnt gone to the ER. He crashed. The ferritin level was insane
https://www.salon.com/2020/04/05/what-it-feels-like-to-survive-covid-19s-dreaded-cytokine-storm/
Clearly there are aspects of this infection which we do not know yet. My hunch is that there is a genetic disposition to the way each petson responds. Some...no symptoms...some young people ...death....some old people...survive. The most susceptible are those whose condition is exacerbated by the effect of the virus. Heart, lung, low oxygenation conditions are affected when the lung is attacked. Then you have the cytokine storm. My hunch...a dysregulated innate immune system....genetic or acquired...unknown. Hunch: genetic...otherwise everyone would get it.
Sadly...we will find out who is at risk....only after many have perished. In the meantime, stay well.
Just my 2 cents.