Many parents are worried that vaccines might be harming their children. One concern was that thimerosal (mercury) in the vaccine was causing autism. Thimerosal has been removed from many of the vaccines given in Canada.
Thimerosal-free influenza and hepatitis B vaccines have also become available in recent years in single dose preparations. You must request the thimerosal-free vaccines prior to your doctor's visit. The new H1N1 vaccine is not thimerosal-free.
Children are receiving more vaccines today than ever before. Some pediatricians in the United States are recommending spacing out the vaccines and that no more than three vaccines be given at any one time. (Currently in Ontario, six vaccines are given at two months of age, six at four months of age, and seven at six months of age, for a total of 19 vaccines. By 28 months of age they will have had 33 vaccines.)
If you are concerned, speak with your doctor.
From the Public Health Agency of Canada:
Currently, in Canada, some multidose preparations of influenza or hepatitis B vaccines are the only thimerosal-containing products that might be offered to children as part of the routine childhood immunization schedule. Thimerosal-free influenza and hepatitis B vaccines have also become available in recent years. (Public Health Agency of Canada, December 2005)
For more information on vaccines go to the Public Health Agency of Canada site.