The political sitiation here has been very tense over the past two years, and Pfizer and CoronaVac somehow represent the US and China respectively.I can’t remember if it was you I was discussing this with but wasn’t vaccine hesitancy in HK supposed to be about a distrust of Chinese vaccines? Is it really so difficult to convince the populace to take Pfizer?
When Pfizer was approved in the west, the pro-China campaign (the government included) kept defaming its safety and exaggerating its side effects (e.g. the Norway incident). This was because CoronaVac lacked data and showed poor efficacy, and this was their way to lure people to take the CoronaVac.
Unfortunately, this made people become overly worried about the adverse effects and things didn't go as they planned. Instead of taking the CoronaVac, people decide not to take any vaccine. As a healthcare professional I really hate to see this, but there's nothing I can do and this is the reality.