I have received countless e-mails and phone calls from patients, healthcare professionals, policymakers, and business leaders nearly every day since COVID-19 entered the United States. The list of questions has been broad, and it has been difficult to point people to a single source for information. Steven Feldman and Veronica Emmerich have created a great resource that answers many of these questions at a level that is easy to read and still complete enough to be helpful to medical experts. I applaud their great efforts to write a book that I can recommend to everyone to help answer questions about COVID-19." John W. Sanders, MD MPH & TMProfessor of MedicineChief, Section on Infectious DiseasesWake Forest School of Medicine