Many patients with upper respiratory tract infections with acute pharyngitis symptoms have visited the hospital. Overwork, neglect of dietary hygiene, personal hygiene, and immune disorders may be recruited.
80% of sore throat is caused by viral infections, such as influenza virus, new coronavirus, respiratory syncytial virus, adenovirus, etc.; strep throat can also be caused by bacteria or stimuli such as dust and smoke, or allergic rhinitis, gastroesophageal reflux disease, etc.