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Fever - symptoms and how to test
Fever is a transient rise in core body temperature caused by an infection or sickness. When a child's temperature reaches or exceeds one of the following ranges, we call it a fever: bottom temperature is 38 degrees Celsius, the oral temperature is 37.5 degrees Celsius, and the temperature taken under the arm is 37.2 degrees Celsius. When you have a fever, your immune system works hard to eliminate the virus or bacteria that caused your illness. The doctor could decide to do tests to identify the cause.