Originally found in The Conversation, a quick internet search yields no less than 21 reproductions of this article. Stuff were a little late on the uptake.
The following review of this article finds some bias and omissions, like many mainstream media articles regarding Covid.
"Vaccines reduce the probability of getting infected, which reduces the probability of a vaccinated person infecting someone else."
What we know that in the short term, vaccines reduce the probability of severe disease if you catch Covid.