This Covid 19 nightmare is certainly winding down. Yet, many people remain afraid of catching this disease! They continue to wear masks, wash and sanitize their hands constantly, seldom leave their homes, avoid those not wearing a mask, and on and on. For all that, there is no reason for such behavior. People should not want to live their lives in constant fear. Not when there is a way to gain a good understanding of how one catches any disease. This book, "A Simple Understanding of Disease Transmission", will give you that good understanding. You see, God, Mother Nature, and Science do not do things 'Willy-Nilly". No, there is order and reason to the transmission of Communicable Diseases. For well over a century Epidemiologist's and Scientists have relied upon the 'Chain of Infection' to combat and prevent people from getting sick. It is time for everyone to understand the chain-of-infection. For with that knowledge, you may never fear Covid, or any other communicable disease, again!