Dr. Mona Hanna-Attisha shares her perspective as a guest writer on the many lessons from this pandemic. One lesson is that when there is a public health emergency, we need to listen to experts. Listening to science saves lives. “I know what happens when science and facts are ignored. In Flint, a denial of common-sense science and dismissal of scientists created and prolonged our public health crisis. The cost has been enormous. In the case of COVID-19, experts in medicine and public health have told us how to mitigate the spread of this insidious and deadly virus. Wear a mask. Wash your hands regularly. Maintain social distancing. And — if you’re exposed — get tested and self-isolate, so that you’re preventing the spread to others.”