He says vaccine resistant strains are up next:
Check out his background:
https://en.wikipedia.org/wiki/Albert_Bourla
"Survivor of the holocaust"...and now head of an experimental vaccine operation causing tons of deaths...wiki says he answers to Bill Gates.
What the actual hell?
You betcha.
https://www.cnbc.com/2020/12/14/pfizers-ceo-hasnt-gotten-his-covid-vaccine-yet-saying-he-doesnt-want-to-cut-in-line.html