The most common type of flexible spending account, the medical expense FSA (also medical FSA or health FSA), is similar to a health savings account (HSA) or a health reimbursement account (HRA).
While some are still in the clinical trial stage, the following vaccines are currently available: Pediarix is a combination vaccine that combines the immunizations for Diphtheria, Tetanus and acellular Pertussis (DTaP), Hepatitis B and inactivated Polio (IPV), which used to require three separate shots. Pediarix is given to children as a three dose series at 2, 4, and 6 months. So instead of 9 shots for the series to get protection against Diptheria, Tetanus, Pertussis (Whooping Cough), Hepatitis B and Polio, you can now get the same protection for your kids in just 3 shots.
Side Effects of Combination Vaccines. Side effects are similar to what children have after getting these same vaccines separately, except fever is more common in children that receive Pediarix, especially on the day of the shot and the day after.