A group of experts who advise the US Food and Drug Administration on its vaccine decisions voted unanimously Thursday to make a broad recommendation about which lineage of the coronavirus should be included in this year’s Covid-19 vaccines,

The change marks a shift in the Food and Drug Administration’s policy on approving COVID-19 vaccines, which the new commissioner described as a “one-size-fits-all regulatory framework.”

The new, narrower FDA approval will likely reduce both access to COVID-19 vaccines for the general ... long they will stay authorized and how the change will affect childhood vaccination overall.