Who's in charge? CDC's leadership 'crisis' apparent amid new COVID-19 vaccine guidance

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This image from video provided by the Department of Health and Human Services shows Health and Human Services Secretary Robert F. Kennedy Jr. speaking alongside Food and Drug Administration administrator Dr. Martin Makary, left, and Dr. Jay Bhattacharya, director of the National Institutes of Health, as they announce that the government would no longer endorse the COVID-19 vaccine for healthy children or pregnant women. (Health and Human Services via AP)