The flu is a viral infection of the upper respiratory tract called. Caused by a virus called Coryza viruses which includes the Rhino-viruses is important, it has infected other species. Adenoviruses, Respiratory syncytial virus infection enters the nose and throat, swelling of the lining of the nose. And the secretion of mucous secretions out. Although the disease will disappear in one week, but a disease that most patients go to the doctor. On average, children are flu each year 6-12 times per year, adults may be 2-4 times a year, women are more often due to the proximity to children. Older people will be once a year.
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