Incubation period of influenza - Definition

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Definition


The incubation period is the time that is necessary for a patient to show signs of a disease after having been infected. This period corresponds to the development of the disease without symptoms. The incubation period of influenza is an average of 48 hours. Flu symptoms appear after that period, fatigue, loss of appetite, muscle aches and cramps, cough, stuffy nose, headache and fever, among others. The infectious period of influenza, that is to say the period during which the patient can transmit the virus, is one week and begins with the infection of the virus; the incubation period without symptoms then explains the high infectiousness of the disease.