It's important to acknowledge that #COVID19 is a new disease and we're still learning how best to treat it.
Such as the threshold of using mechanical ventilators and tolerating low levels of blood oxygen in patients
https://www.wsj.com/articles/some-doctors-pull-back-on-using-ventilators-to-treat-covid-19-11589103001 by @sarahtoy17 @deniseroland

Or that at least 20-30% of patients develop blood clots
https://www.nature.com/articles/d41586-020-01403-8?utm_source=twt_nnc&utm_medium=social&utm_campaign=naturenews&sf233767033=1 @NatureNews @cwillyard
And these are often missed and can be lethal
https://twitter.com/EricTopol/status/1258171469072236544
so blood thinners may be required for prevention

Or that 73 children in New York (alone) could develop Kawasaki disease (or "like") pan-inflammatory, toxic shock syndrome with 3 deaths
https://www.usatoday.com/story/news/health/2020/05/09/coronavirus-new-york-children-die-disease-similar-kawasaki/3103395001/ by @GannettAlbany @USATODAYhealth