A new study suggests that PCB exposure hinders kids' responses to tetanus and diphtheria vaccines. The study sample consisted of "587 children born between 1999 and 2001 on the Faroe Islands, located in the North Atlantic between Norway and Iceland." This area has been noted for high PCB concentrations in the environment. The study revealed,
"higher PCB concentrations, particularly in children at 18 months, were associated with lower concentrations of diphtheria and tetanus antibodies at ages 5 and 7."
This is some pretty scary stuff! Essentially, PCBs could be unraveling the benefits of decades of medicine. Even scarier, these effects are being noticed in children. This means that we will have to observe PCB impacts for years before we fully understand the effects of early-age exposure.