The Centers for Disease Control and Prevention has issued updated advice on the COVID-19 vaccine days after Health and Human Services Secretary Robert F. Kennedy Jr said the agency would no longer recommend the shot to children and pregnant women.

U.S. public health authorities have skirted normal procedures and announced two major policy changes that will likely reduce access to COVID-19 vaccines and restrict use to higher-risk populations. Here,

Wisconsin health officials say RFK Jr.'s recent pullback of COVID-19 vaccine advice for kids and pregnant women isn’t based on new evidence.

The resignation follows an order by Health and Human Services Secretary Robert F. Kennedy Jr. to change the agency's guidance.

An official at the CDC who oversaw the agency's recommendations for COVID-19 vaccines has resigned, following a week of mixed messaging from federal health officials.