Probably for similar reasons to why our respiratory illnesses spiked the first winter after most of the Covid lockdowns were lifted. Remember China re-opened in January of this year so this is the first "full" flu season since their very draconian lockdowns. If it were mostly vaccine related I might have expected we would have had a similar problem in 2021 or 2022 when we vaccinated all kinds of kids and other people here.
Probably for similar reasons to why our respiratory illnesses spiked the first winter after most of the Covid lockdowns were lifted. Remember China re-opened in January of this year so this is the first "full" flu season since their very draconian lockdowns. If it were mostly vaccine related I might have expected we would have had a similar problem in 2021 or 2022 when we vaccinated all kinds of kids and other people here.