While mercury (Thimerosal) has been removed from most vaccines, it is, unfortunately, still included in some vaccines for children and the elderly, and in some vaccines administered in certain developing nations. There are over 150 studies on organic-mercury used as a preservative in various vaccines, and over a dozen of them found outcomes of death, malformation, autoimmune reactions, neurodevelopment disorders, and more.
The United States Centers for Disease Control and Prevention (CDC) may assert that Thimerosal is safe, but concerns over its safety still led them to remove it from most vaccines. The crazy thing is, its safety was based on the conclusions of fewer than 10 studies, all of which were sponsored by the CDC. Hundreds of other publications, on the other hand, have been raising concerns about it for decades. (source)
Are we going to see the same thing with aluminum in the near future?