Where do you get your information from? Because Infectious disease specialists have been working on and testing vaccines for the family of respatory diseases that COVID belongs to since the SARS outbreak in 2002...
And the CEO of pfizer wasnt fully vaxxed until recently because he is making sure the public has their vaccines before he skips any lines to get his first.
First testing of mRNA on mice took place in 1999, then ferrets in 2007 followed by guinea pigs in 2018.
The first phase l/ll clinical vaccination trial with direct injection of mRNA in humans against tumor antigens was conducted during a trial between Feb-Mar 2008.
Mrna with the covid spike protein was finished testing on mice and macaques in September, 2020.
As far as the Phizer CEO, if you call 5 months ago recent then you are correct, he had his second shot March 10, 2021.