Dr. JoAnne Flynn is a Professor of Microbiology and Molecular Genetics at the University of Pittsburgh and Dr. Stephen Hedrick is Chancellor's Associates Chair VII Distinguished Professor Emeritus at the University of California, San Diego. They talk about the American Association of Immunologists' Immunology Explained campaign, which aims to explain the science of the immune system to the general public. They also discuss their efforts to educate legislators about the value of immunology research and promoting childhood vaccination.