Vaccines: Reasons for Concern

Part 1: They work, but how well and for how long? The real-world evidence is not as clear as you might think.

A few days ago, I asked someone in the United Arab Emirates why the Covid vaccines seemed to have failed so badly there. He had first emailed me in the winter, at a time the UAE and Israel were leading the world in first-dose vaccinations – and seeing a sharp rise in cases and deaths.

What was so striking about the increase was the fact that the Emirates…