Ask Doctor of Nuero-Toxicology Chris Martenson of Peak Prosperity what he thinks the answer is. I think he is on twitter, besides the “'tubes”, and he has his own website which can give you his email to reach him directly. He has provided absolutely wonderful coronavirus pandemic coverage from his channel and I believe he has the insight after all of this to provide a meaningful opinion on the matter of what happened to the flu. Maybe look at data for hong kong from the very start of this whole thing way back in december or so, to today.
And this is from a leftist news source.