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The normal temperature inside your childâs body is usually around 37 degrees Celsius. Your child has a mild fever if their temperature is higher than 38 degrees Celsius. A high fever usually means more than 39 degrees Celsius.
While a slightly elevated temperature may be a sign that you are getting sick, chances are a number of other factors are influencing your body temperature on a daily basis. As a result, 99.9 degrees Fahrenheit is not considered a fever.