What are the Causes of Cold and Flu?: The causes of cold and flu are viruses. For flu, there is a specific virus called rhinitis, while for common cold, a host of viruses exist that can lead to the condition.
Common cold and flu are viral illnesses that is they care caused due to infection by a virus. Read to know the causes of cold and flu. [Read: Causes of Influenza]
Common colds and flu occur recurrently. As there are many viruses which can cause cold, the body never develops resistance against all of them and as the flu virus changes form frequently people don’t develop resistance to flu virus. According to experts, children in preschool and elementary school can experience six to 12 colds per year and adolescents and adults usually have two to four colds per year. Flu vaccine taken every year can protect you from type A and B flu viruses. There is no flu shot for type C virus. [Read: What is the expected duration of Common Cold Viral Rhinitis?]
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