The Trump administration is releasing second doses of coronavirus vaccines that had been held back for booster shots and is urging states to administer the vaccine to anyone over age 65 and people with pre-existing health conditions, a shift from its earlier guidance to prioritize doses for health-care workers.

“First, we have already made available every dose of vaccine.

So we had been holding back second doses as a safety stop,” Health and Human Services Secretary Alex Azar said on ABC’s “Good Morning America” Tuesday.