There has been a lot of confusion about what ingredients are in the H1N1 Vaccine. In order to distill the information to make it easier for you to make an informed choice, here is a brief synopsis of the information provided by the manufacturers in their package inserts.
There are 4 manufactures who have been approved to sell H1N1 vaccine in the US. They are: Novartis, CSL, Sanofi/Pasteur and MedImmune
1. Novartis makes an injectable vaccine for ages 4 and above
Ingredients: Thimerosal (Mercury) both in the single dose and the multi dose vials
Antibiotics - polymyxin and neomycin (can be neurotoxic)
Manufactured with phenol (the chemical used on skin in cosmetic face peals to remove wrinkles)
Note: They recommend that children ages 4-9 get 2 injections one month apart. This would increase the risk from a reaction to the mercury (e.g, neurological damage such as Gullain-Barre or possibly Autism)