The same way hospital aquired pneumonia occurs to patients on a vent; contamination. Cross contamination is actually measured to some extent within hospitals and reported....or they are supposed to be. Good hygiene prevents cross contamination. Any hospital that had a pre-corona intubated patient on a vent that obtained the virus is 99.9% due to staff and or visitors.Where are you getting your information from? I’m trying to follow your logic but it makes little sense. If you are already in the hospital on a ventilator, how did you get covid-19? Covid patients are isolated. If you are on a ventilator you are not breathing unfiltered air. How do you determine if a patient on a ventilator has symptoms? Pretty sure they didn’t get a lung X-ray, and you wouldn’t know if they had breathing problems. Pretty sure if you were compromised enough to be on a ventilator, covid would have killed you faster.
Where did 121 deaths a day from Covid-19 come from? 1165 were recorded yesterday in the US alone. The vast majority of deaths are in isolated clusters, most of the 7800 number you referenced has had little impact from Covid-19. If you tested positive for Covid and got counted, it’s a sharp improvement over how the flu is estimated, you don’t even have to test positive for the flu to be counted, that comes from the C.D.C. themselves.