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Reaction of the defense mechanism to external harmful forces (infections) commonly produces symptoms such as Pain, Fever, Mucus, Cough etc.
Fever inactivates many viruses. Mucus in the respiratory tract envelopes and carries away the irritating material. Cough helps to throw it out as mucus. These are all considered as healthy reactions of body and we never tend to supress or oppose them, instead we treat the patient to cure the ailment which produces them.
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