Remember when the flu disappeared?

Remember when the flu disappeared?

Professor @Florian_Krammer is an
Austrian-American virologist
& the Professor of Vaccinology
at the Icahn School of Medicine
at Mount Sinai.

As principal investigator
of the
Sinai-Emory Multi-Institutional Collaborative Influenza Vaccine Innovation Center,
he missed this?

https://twitter.com/I_Am_JohnCullen/status/1722750565716017593?t=8XNLRbuqtBhqWECrqw547g&s=19