Kelly is excited it is finally time for her COVID-19 vaccine. Her little brother Joey is not so sure he wants a shot. Their mom, a doctor explains the science behind vaccine development, biology and history. Kelly and Joey learn how the COVID-19 vaccine works, what to expect and how the vaccine will help us return to normal life.

Author Lauren Block, MD MPH is a physician and medical school professor and her husband Adam E. Block is a health economist and public health professor. The parents of three elementary school aged children, they explain complex science and epidemiology through beautiful illustrations and simple concepts that help teachers and parents teach how the COVID-19 vaccine works and how getting it will make everyone safer.