Except the summer viral production period is always more benign and antibodies produced in the bodies of those who virally produce in the summer months and in response to those environmental conditions and triggers cannot count on that to protect them in the Winter where an entirely different set of conditions act as triggers for different kinds of viral production.

Now, they certainly could rebrand to the flu if they wanted to - ducking having to face the failure of the vax to prevent anything - then shifting to blaming people for not getting their flu shot as to why they're all sick again.

They have many twists and turns they can utilize to keep the Agenda going...