This rare “syndrome” is most often attributed to a person who has the flu. As I’ve always said this is/was a severe flu year worldwide.
I also believe that many of the Covid cases/deaths were from influenza, as happens every year. It's become obvious that Covid deaths included anyone with similar symptoms (flu, cold, respiratory ailments, even strokes) as all medical types would first test for Covid. How can F&cski and others say that the flu just disappeared this year?
I am not letting anyone inject me with experimental drugs, but than I'm 71 and rarely leave the house. I'll wear the stupid worthless mask if required.