Maybe. However if I understand correctly it is much more contagious than the flu which means that this 0.4% will die almost at the same time (say in a year), wh

Maybe. However if I understand correctly it is much more contagious than the flu which means that this 0.4% will die almost at the same time (say in a year), while the flu will have to circulate for years until it claims its own 0.1% (or whatever percent). I am not an expert, btw.