Are type B and type A influenza severe?

Medically speaking, influenza A and influenza B are considered serious diseases. Influenza A is caused by viral pneumonia and can lead to severe consequences such as respiratory failure and encephalitis. Additionally, influenza B virus can also threaten patients' lives, causing various illnesses including pneumonia, central nervous system disorders, cough, and fever, potentially leading to severe complications or even death. In severe cases, both types can result in fatal outcomes, causing patient mortality. Therefore, influenza A and B pose significant threats to patients' health and life safety, necessitating effective preventive measures to avoid infection with these severe diseases. Furthermore, when symptoms appear, patients should seek medical attention immediately and receive timely treatment to prevent disease progression and worsening.