The CDC reported an unusual spike in "Flu" hospitalizations and deaths in early January 2020.

Aligns perfectly with the Covid-Y2K coming over in November.

The curve was missed.

The disease had spread all over the US well before the quarantines were put into effect.

Then, the quarantines forced families into a long period of close contact, where it was likely one or more of them had the cold virus.

Which made it have more of an impact with the elderly or compromised members of that family.