Immunization starting at birth is associated with a decreased risk of diabetes while immunization starting after 2 months is associated with an increased risk of diabetes.
Vaccines probably affect the risk of diabetes by modulating the immune system.
Type I diabetes, an autoimmune disease. At this time studies have not been performed to determine if Type II diabetes is also associated with vaccination. Based on the fact that many people diagnosed with Type II diabetes also have autoimmune destruction of there insulin secreting cells of the pancrease, it is reasonable to assume that immunization may be altering the risk of Type II diabetes as well. A review of Type I and Type II diabetes are included below. Data supporting a link between immunization and diabetes in humans and animals can be viewed on the corresponding linked pages.