Why does influenza B infection cause coughing?

Coughing is one of the common symptoms following infection with influenza B. The influenza B virus invades the respiratory tract, irritating the respiratory mucosa and triggering an inflammatory response, which increases respiratory secretions and subsequently leads to coughing. While coughing helps clear secretions and viruses from the airways, it may also exacerbate symptoms. Therefore, in treating influenza B, in addition to using antiviral medications, it is important to alleviate cough symptoms and maintain airway patency to promote recovery.