Is the Pfizer COVID Vaccine Testing on Stopping the Transmission of the Virus?

CNN's John Sutter says he wants to know if the Pfizer vaccine tested on stopping transmission of the virus before it entered the market. If not, are you willing to share the data with this committee? And I really want a straight answer. Yes or no? He also said PayPal was just inserted into their law as well as Doctors can now be disciplined for spreading misinformation. Also asked why they won't let him purchase ammo in California and other states that support gun ownership.