Vaccination has played a substantial role in reducing the impact of COVID across the globe, and allowed life in most countries to gradually return to something like how we remember it before the pandemic. Researchers estimate that tens of millions of lives have been saved thanks to COVID vaccines.
Given immunity to the initial course of vaccines wanes over time, booster doses are important. As with the original doses, boosters were rightly offered first to the most vulnerable. But a third dose has been available to all adults in the UK since December 2021.
