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Incubation period of influenza - Definition


Influenza is a viral disease that attacks the respiratory tract. Each year, a flu epidemic appears, emerging in May in Asia with a slight modification from the virus of the previous year, hence the need to adapt the vaccine annually to the new strain. The incubation period is the period during which the infected patient does not develop symptoms, but the virus progresses. The incubation period of influenza is relatively short, generally 48 hours. It can be spread during the incubation period, in the absence of clinical signs, hence its highly contagious nature. Then the symptoms appear more or less abruptly with high fever, body aches, headache, cough, stuffy nose, and fatigue.