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Colds are caused by viruses, most commonly the rhinovirus or coronavirus (COVID-19 is just one form of it!). According to WebMD, a cold is a mild respiratory illness with symptoms that include a sore throat, sneezing, runny nose, cough and congestion. It should not be mistaken for the flu, which shares similar symptoms that can become more severe. The flu can also include a persistent fever, fatigue, headaches and body and muscle aches.
There’s a reason why it’s called the common cold: t...