CV and mad panic behaviour

[LP]

By what measure is the vaccine stopping transmition?

Efficacy is not just a measure of infection prevention, in fact historically most high efficacy vaccines do not stop infection, efficacy is a measure of how a vaccine prevents severe / acute disease as well as how they reduce the risk of infection and transmission.

For example you can have a high efficacy vaccine if it stops most or all severe disease but does not stop infection / transmission at all.

You won't find any credible scientific or health source that claims the Sars-CoV-2 vaccines stop infection, that line of debate only ever comes from the anti-vax movement or others spinning selective reports for political purposes.