Prohibits the administration to any person under the age of three years and to women who know they are pregnant of any vaccine containing more than 0.5 micrograms of mercury per 0.5 milliliter dose, except that, for children under 3 years, an influenza vaccine may contain not more than 0.625 micrograms of mercury per 0.25 milliliter dose, and for pregnant women, an influenza vaccine may contain not more than 1.25 micrograms of mercury per 0.50 milliliter dose; authorizes the commissioner of health to grant exemptions in cases of disease outbreaks and vaccine shortages, and exempts influenza vaccines for pregnant women if there is in any year an insufficient supply of such vaccine which complies with the provisions of this act.