Earlier quoted context omitted.
Heart scarring too https://www.smh.com.au/national/seizures-and-battered-heart-...
Just like the flu. Here is a nice paper that goes through all the cardiac, neurological, renal and other organ complications of influenza.[1] [1] https://onlinelibrary.wiley.com/doi/full/10.1111/irv.12470
So... not like the flu in scale or scope.