> So it seems early to call this a side-effect. Yes, causation is hard to show with certainty. However, regulator have to follow rules, and those rules probab

> So it seems early to call this a side-effect. Yes, causation is hard to show with certainty. However, regulator have to follow rules, and those rules probably err on the side of caution. Similarly to "first, do no harm". I agree that the matter of public trust is also relevant here. In some countries large part of the population already does not want to get vaccinated. So the vaccinator is naturally motivated to prevent any PR screw-ups even at the cost of slowing down.