Upper respiratory tract infection, referred to as upper infection, including the nasal cavity, pharynx, throat, some acute inflammation of the general term, is a group of diseases, usually occurring in the winter, spring, for many reasons, the common causes of viral infection, bacterial infection.
1. Viral infections: 70% to 80% of upper respiratory tract infections caused by germs, common viruses are rhinovirus, adenovirus, respiratory syncytial virus, etc., and may be influenza A, influenza B.
2. Bacterial infections: 20% to 30% of upper respiratory tract infections are caused by viruses, common pathogens include Staphylococcus aureus, hemolytic streptococcus and so on.
Because the human respiratory tract is an open organ, subject to external influences, such as weather changes, cold, air pollution, autoimmune function decline, etc., are prone to upper respiratory tract infection.
Upper respiratory tract infections are also caused by other factors, should be timely to the regular hospital respiratory outpatient clinic, a clear cause, under the guidance of a professional physician, symptomatic treatment in accordance with the doctor’s instructions, do not self-medication, so as not to delay the condition.