Vaccine Shedding Proven in Chicken Study from 2016

Fact checkers can say it doesn't happen but science shows that it CAN happen.
I guess it really depends on the type of dis-ease and also the role the vaccine plays i.e. does it stop transmission, does it stop infection or re-infection or does it simply reduce symptoms?
Side note: I seem to have figured out how to get the screen recordings to view as full screen on Rumble but apologies, in doing so I now am having audio timing issues.