Looking at the pathology of the lungs of people who have died with ARDS due to COVID-19.

“In our small series, vascular angiogenesis distinguished the pulmonary pathobiology of Covid-19 from that of equally severe influenza virus infection.” https://www.nejm.org/doi/full/10.1056/NEJMoa2015432?query=featured_home">https://www.nejm.org/doi/full/...
See the editorial too:

“ARDS has long been recognized to be remarkably heterogeneous, with not only a wide range of causes but also a broad spectrum of severity, abnormalities on imaging, and gas-exchange impairment.”

Similar in its difference? https://www.nejm.org/doi/full/10.1056/NEJMe2018629">https://www.nejm.org/doi/full/...
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