Book excerpt: As a physician who has spent the better part of the last two decades chasing bugs all over the world - from Ebola in Uganda, to polio in Pakistan, SARS in Toronto, and the HÃsubscript 1¨NÃsubscript 1¨ influenza outbreak across North America - Dr. Bonnie Henry, a leading epidemiologist (microbe hunter) and public health doctor, offers three simple rules to live by: clean your hands, cover your mouth when you cough, and stay at home when you have a fever. From viruses to bacteria to parasites and fungi, Dr. Henry takes us on a tour through the halls of Microbes Inc., providing up-to-date and accurate information on everything from the bugs we breathe, to the bugs we eat and drink, the bugs in our backyard, and beyond. Lively, informative, and fascinating, Soap and Water & Common Sense is the definitive guide to staying healthy in a germ-filled world.