evidence: A few vaccines do include aluminum salts, mercury, and Polysorbate 80 as inactive ingredients (FDA 2018). However, these ingredients have been proven to be safe at the levels used in vaccines. Aluminum levels in infants from vaccine adjuvant and food sources are safely below risk levels (Mitkus et al. 2011). The only vaccine ingredient that contains mercury is thimerosal, a preservative used to prevent the growth of bacteria. Today, thimerosal is not used in any of the required childhood vaccines in the U.S. (CDC 2013). Furthermore, there has been no link discovered between thimerosal and autism (Andrews et al. 2004; Fombonne et al. 2006; Hviidet al. 2003; IOM 2004; Thompson et al. 2007). In addition, Polysorbate 80 is an additive commonly used in food products, including bread, oil, and chocolate. The U.S. Food and Drug Administration (FDA) set the acceptable daily intake (ADI) of polysorbates at 1500 mg per person per day, and an extensive toxicology study conducted in Japan set the ADI at 10 mg per kg body weight per day (Food Safety Commission of Japan 2007). The amount of Polysorbate 80 used in vaccines is significantly less than either of these ADI recommendations. [...] Mitkus, R. J., et al. 2011. "Updated aluminum pharmacokinetics following infant exposures through diet and vaccination." Vaccine 29(51): 9538– 9543. https://doi.org/10.1016/J.VACCINE.2011.09.124.