• A survey of Washington state pediatricians and allied health professionals showed that two thirds provide written information to parents on diphtheriatetanus-pertussis; measles-mumps-rubella; and oral polio vaccines. Twentytwo percent of pediatricians provide written information on inactivated polio vaccine. Sixty-two percent of pediatricians who give immunizations require a parent's signature as evidence of having provided information or obtained consent.
Holt VL, Marcuse EK, Coombs J. Pediatricians' Immunization Consent Practices in Washington State. Am J Dis Child. 1987;141(7):734-735. doi:10.1001/archpedi.1987.04460070036017