I heard from someone that DR. Sanjay in CNN told p

I heard from someone that DR. Sanjay in CNN told people that the Vaccine is not a real vaccine. It acts like therapeutic medicine. It will lower the intensity of Virus effects. You may catch the COV but you may not know it and pass it to others. Hmmm. I don't know if this is true. Any experts on this board can shed some light about this will be greatly appreciated.