More evidence emerges on why covid-19 is so much worse than the flu

Researchers who examined the lungs of patients killed by covid-19 found evidence that it attacks the lining of blood vessels there, a critical difference from the lungs of people who died of the flu, according to a report published Thursday in the New England Journal of Medicine. Critical parts of the lungs of patients infected by the novel coronavirus also suffered many microscopic blood clots and appeared to respond to the attack by growing tiny new blood vessels, the researchers reported. The Washington Post