The argument From the Trace Amounts study:
After realizing the amount of mercury in the childhood vaccination schedule recommended by the CDC exceeded all national and global maximum safety limits, the American Academy of Pediatrics and the United States Public Health Service called for the immediate removal of Thimerosal from all vaccines on July 7, 1999.
By 2003, the vaccine manufacturers had begun to react to the 1999 call by lowering the mercury content in many of the Thimerosal-preserved early childhood vaccines. However, in April of 2002, the CDC began recommending that pregnant women and very young children get annual Thimerosal-preserved flu shots. The result was a ‘shell game’ which has caused widespread confusion in the public because of press reports declaring, “Since (select a year between 1999 and the present), mercury has been removed from all recommended vaccines for children except for some flu shots.”
Astoundingly, the total level of mercury exposure, if a child receives all the possible CDC-recommended vaccinations that are still Thimerosal preserved, from 6 months to 18 years of age, has actually increased. Significantly, if you put the amount of mercury added to the immunization schedule as a result of the CDC-recommended seasonal and (in 2009) H1N1 flu shots** on one side of a scale, and the amount of mercury that was subtracted from that schedule by reformulating early childhood vaccines without Thimerosal on the other side, the total amount of mercury added far outweighs the amount of mercury subtracted. In addition, today most tetanus shots and the multi-dose Sanofi Menomune® vaccine that are approved by the US Food and Drug Administration (FDA) still contain 25-micrograms-a-dose mercury.
Currently, the actions taken by the vaccine manufacturers, the FDA and the CDC have increased the possible maximum childhood exposure to mercury from vaccines to twice the level that triggered the 1999 call to remove mercury from all vaccines as soon as possible! Also, new vaccine formulations with 25 micrograms of mercury per 0.5-mL dose are still being approved by the FDA for administration to pregnant women and children.
**Most doses of these flu vaccines are Thimerosal-preserved.