Dear Dr. Gupta,

When I was recently vaccinated against H1N1 (swine flu) in Los Angeles, I was concerned to read in the medical literature that was provided to me (see closeup image #1 and full image #2) that the inactive (dead virus) version of the vaccine may contain thimerosal as a preservative. Upon further research, I discovered that vaccine shortages forced the Secretary of Public Health in the State of California to temporarily suspend measure AB 2943, which normally restricts the use of thimerosal, until November 30th.

I've heard both sides of the debate: on one hand, that the mercury content of thimerosal may be linked to autism in young children; while on the other hand, that the ban on thimerosal in pediatric medicine in California since 2004 has not appreciably changed the rate of autism.

For my own health, I understand the benefits of the vaccination and am willing to accept educated guesses and calculated risks. However, in the case of children, I'd like to err on an overabundance of caution. Amid the nationwide vaccine shortages with the flu outbreak, is it worth the additional time and delay to have our pediatrician track down thimerosal-free vaccine for our child?

Thanks and best regards!