1. A
concentration of 1:10,000 is equivalent to a 0.01%
concentration. Thimerosal is approximately 50% Hg by weight.
A 1:10,000 concentration contains 25 micrograms of Hg per
0.5 mL. 2. A previously marketed lyophilized
preparation contained 0.005% thimerosal. 3. COMVAX is not approved for use under 6
weeks of age because of decreased response to the Hib
component.
*This
product should be considered equivalent to thimerosal-free
products. This vaccine may contain trace amounts (<0.3
mcg) of mercury left after post-production thimerosal
removal; these amounts have no biological effect.
JAMA 1999;282(18) and JAMA 2000;283(16).