If a fever is there to raise a body’s temperature to help kill off a virus – why at the later stages of infection does the fever stop being a symptom even though other symptoms are still present? If other symptoms are still present then the host must still carry the pathogen, so surely the fever should last until the host is healthy?
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Because it’s one that your body controls and it takes a lot of energy to maintain the fever. The fever also causes harm to your body’s vital organs like your brain. Your body only wants to increase it’s body temperature for the minimum amount of time necessary.
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