Initially, the influenza, or the flu, may be shrugged off as just a common cold due to similar symptoms, such as a runny nose, sinus congestion, sneezing, sore muscles, and sore throat.
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However, a prime differentiator between cold versus flu is that similar symptoms will come on and worsen gradually with a cold as compared to the flu, which hits suddenly and hard with the following symptoms…
The initial sign that you have the flu and not just a routine cold, will be a high fever that soars between 102 and 106-degrees Fahrenheit (or 38-degrees Celsius). Typically, children’s fevers will be higher than adult fevers and can last 3 to 4-days before breaking.