The rewriting of government recommendations will make the effort to get vaccine doses into arms exponentially more difficult, experts say.

Lakshmi Panagiotakopoulos said she could no longer help vulnerable people after officials removed recommendations to immunize children and pregnant women.

Kennedy Jr.'s intervention in COVID-19 vaccine recommendations without input from a key U.S. CDC advisory panel has sown confusion among physicians and insurers over who should get the shots and whether they will be covered,