In-vitro studies conducted to date show that the clinical candidate PF-07321332 is a potent protease inhibitor with potent anti-viral activity against SARS-CoV-2

Well now, isn't that convenient?
Slid right under the radar for quite a while. Makes a lot more sense why they're doing everything they can to keep Ivermectin out of the US now.
Well, that and they need to in order to keep their vaccine emergency use authorization.
I always find illustrations help: https://postimg.cc/YLMJGsqZ

In-vitro studies conducted to date show that the clinical candidate PF-07321332 is a potent protease inhibitor with potent anti-viral activity against SARS-CoV-2

Well now, isn't that convenient?
Slid right under the radar for quite a while. Makes a lot more sense why they're doing everything they can to keep Ivermectin out of the US now.
Well, that and they need to in order to keep their vaccine emergency use authorization.

In-vitro studies conducted to date show that the clinical candidate PF-07321332 is a potent protease inhibitor with potent anti-viral activity against SARS-CoV-2

Well now, isn't that convenient?