Common cold is often described as a sore throat, runny nose, sneezing, or tearing. Though, colds are very common, they are more widespread in children and decline with age. Colds are rarely dangerous to healthy adults or children, but may seldom be dangerous to infants, the elderly or other at-risk groups. The common cold is caused by a virus and is very contagious. About 200 different types of viruses are there that cause common cold. Most cases of the common cold are mild, and most people recover from the common cold without complications. But, sometime they can lead to more serious infections and complications in some cases.
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