RE: Do the Pfizer and Moderna ones create antibodies?
Of course. How else can you determine immunity against the virus?
I think I sent that twice, but there is an opposing view link at the bottom of the second private message.
Monitor to see how many people in the test (vaccinated) group develop symptoms vs. those in the placebo or unvaccinated group. https://www.who.int/influenza_vaccines_plan/resources/Session4_VEfficacy_VEffectiveness.PDF