The groups, including the American Academy of Pediatrics, say the C.D.C.’s revised vaccine schedule is not based on scientific evidence and will harm the public. Six leading medical organizations plan to ask the courts to throw out revisions to the childhood vaccination schedule announced last week by Health Secretary Robert F. Kennedy Jr. and other federal officials.
Mr. Kennedy and his appointees reduced the number of diseases prevented under routine childhood immunization recommendations to 11 from 17. The new schedule recommends that vaccines against six diseases — including hepatitis A and B, rotavirus and the flu — be given to most children only after consultation with a health care provider.