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Common-cold Sense You cant beat it, but you dont have Jo join it.2 Maybe it got the namecommon cold because its more common in winter. The fact is, though, being cold doesnt have anything to do with getting one 3. Colds are caused by the spread of rhinoviruses,, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one4. Children are the most common way cold viruses are spread to adults，because they have more colds than adults 一 an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They havent had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it _ but only it.5 Colds are usually spread by direct contact, not sneezing or coughing. From another persons hand to your hand and then to your nose or eyes is the most common route.6 The highest concentration of cold viruses 7 anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces. Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds. But even careful hygiene wont ward off 8 every cold. So, what works when a coughing, sneezing, runny nose 9 strikes? | 
