Finds that where there is public concern over the safety of vaccines, vaccination rates may be reduced to the point that deadly, vaccine-preventable, childhood diseases return. This measure is being enacted to maintain public confidence in vaccine programs, so that the public will continue to seek vaccinations and their health benefits may continue to protect the people of Washington.

Provides that, beginning July 1, 2007, a person who is known to be pregnant or who is under three years of age shall not be vaccinated with a mercury-containing vaccine or injected with a mercury-containing product that contains more than 0.5 micrograms of mercury per 0.5 milliliter dose.

Authorizes the secretary of the department of health to, upon declaration of a public health emergency, suspend the requirements of this act for the duration of the emergency.