US to limit Covid boosters to over-65s or those at high risk

In a letter to the prestigious New England Journal of Medicine, the Food and Drug Administration's Vinayak Prasad and Commissioner Martin Makary said the shift brought US policy more in line with European nations. They described the initial rollout of Covid-19 vaccines as "a major scientific, medical, and regulatory accomplishment" -- but argued that the benefits of repeated boosters in low-risk individuals remained uncertain. They contrasted the US approach with that of countries such as the United Kingdom...