A 35-year-old acquaintance drops dead from a hemorrhagic stroke. A friend in her 40s, and another in his 70s, experience recurrent spells of extreme dizziness, their hearts pounding in their chests when they stand.

A 21-year-old student with no prior medical history is admitted to the ICU with heart failure, while a 48-year-old avid tennis player, previously healthy, suddenly suffers a heart attack. A relative is diagnosed with pericarditis, an inflammation of the protective sac surrounding the heart. I can’t confirm the exact etiology of all these cases. But every one of the people I mentioned had a history of COVID either days or months beforehand–and all of them experienced only mild cases of infection at the time.

Is it possible, despite everything we know, that we still underestimate COVID’s reach and danger? It is not normal for me to know so many people with severe conditions. Not normal at all. Lengthy social media threads have begun compiling lists of people much like those mentioned above, and while there are many possible causes for their health misfortunes, the sheer volume of cases speaks to something more worrisome than just a Twitter phenomenon.

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