Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul, South Korea; Asia Pacific Influenza Institute, Korea University College of Medicine, Seoul, South Korea. Electronic address: [Email]
Influenza C virus has been largely neglected, compared to influenza A orB viruses, and is not routinely tested in clinical practices. However, several studies have indicated that influenza C virus causes severe acute respiratory illness and pneumonia in all ages.