I know I've been bleating on about this for weeks, so apologies if I keep repeating myself.
It's been known for weeks that Coronavirus primarily attacks the blood system, causing embolisms. For most, the virus is cleared and the embolisms don't cause permanent damage.
However, for those with blood which is already "sticky", too little oxygen can get to vital organs and pulmonary embolisms can develop, which can lead to no oxygen in the lungs. For those who survive, oxygen starvation to vital organs, including the brain, can be like a stroke.
That's why people with diabetes and high blood pressure are so badly affected, as well as those with impaired lung function.
I watched the interview with Kate Garroway and found it incredibly sad. I'm sure she must know that life is unlikely to return to anything like normal any time soon.