Nothing is completely ‘safe’. Even too much water can cause hyponatremia. The correct question is does the potential benefit outweigh the potential harm? For a

Nothing is completely ‘safe’. Even too much water can cause hyponatremia. The correct question is does the potential benefit outweigh the potential harm? For adults over the age of 40, the vaccine was a no-brainer. For very young children — where the risk was always very low — the question was more complicated. The European Medicines Agency was even more cautious than the FDA in approving the Pfizer vaccine for 5-11 year olds. I haven’t been following the story recently so I don’t which European countries, if any, have approved the vaccines for children under the age of 5.