Twenty-nine states and the District of Columbia now reject at least some federal vaccine guidance as the federal Centers for Disease Control and Prevention continues to de-emphasize the importance of childhood vaccinations under U.S. Health and Human Services Secretary Robert F. Kennedy, Jr., according to research by KFF, a nonprofit health policy organization based in California and Washington, D.C. 

The tally as of March 10 reflects states that have announced they will go their own way on childhood vaccines since last May, when Kennedy began to make changes to the vaccine schedule. Those changes culminated with a reduction in recommended routine childhood vaccinations, from 13 to 7, as of January. 

New state-by-state recommendations reflect a partisan divide, as all states with Democratic governors have rejected federal childhood vaccine guidance while many Republican states have not.