Vaccines are a modern miracle that have saved millions of lives. Thanks to modern science and research, we have vaccines for dozens of deadly illnesses, including mumps, measles, chicken pox and so many more. While we take most of our immunizations in childhood and get boosters in adulthood, there is one very important vaccine that we should get every year: the flu shot. Like all medications, the flu shot has potential side effects and there are certain populations that shouldn’t