Can someone please explain to me why we don’t know if the vaccine reduces spreading?
How can someone spread covid if they don’t get it? Even if someone gets a milder case of covid than they would have had they not been vaccinated (because the vaccine still reduces the virus in the small minority who will still get infected) they still should be spreading it less than if they had a worse case (although I guess you could argue if they are sick at home they will expose fewer people…).