Tylenol is widely used right before or after a vaccine to prevent fever in babies. However, a new study shows that using Tylenol may reduce the effectiveness of the vaccine. With the widespread use of the seasonal and H1N1 Swine Flu vaccines, it may be a good idea not to use Tylenol after a child gets the vaccine.

The costs that health care providers are charged and reimbursed for childhood vaccines vary widely, and the high cost of some immunizations is leading to significant financial strain for some physicians, according to a pair of new studies from the University of Michigan Health System.

The only realistic way of preventing deaths and severe complications arising from chickenpox is to routinely vaccinate children against the disease, concludes research published ahead of print in Archives of Disease in Childhood.