At first, health services claimed that vaccines prevent the infection. That was a general narrative of the "experts" convincing Poles to get vaccinated until it was proven wrong by the statistics.
Then they started claiming that it may not prevent infection but it prevents hospitalization. This is also being debunked now since some hospitals released independent (not under the control of a health ministry) statistics in which there's are equal amounts of vaccinated and unvaccinated patients being treated for corona.
Then some of them started to push the new narrative: yes, you may end up in the hospital even if you get jabs but you will still feel better than those unvaccinated flat-earthers...
Fortunately, more and more people are waking up to see this absurdity and once the critical mass will be reached there's no turning back.