After how many days can the influenza virus typically continue shedding after symptom onset?

The influenza virus typically continues shedding after symptom onset for about 5 to 10 days. This duration can vary depending on factors such as the individual's immune response and age, with younger children and immunocompromised patients potentially shedding the virus for a longer period. Shedding refers to the presence of the virus in respiratory secretions, which can contribute to the transmission of the virus to others during this time.

Understanding this time frame is essential, particularly for public health strategies aimed at controlling the spread of influenza. Knowing that viral shedding usually occurs within this window informs decisions regarding isolation of infected individuals and preventive measures, such as vaccination and antiviral treatments, especially in periods of high transmission.