Upper respiratory infections (URI's) illnesses develop due to acute infection, most often a virus but also, potentially, bacteria. The nose, larynx, pharynx, and sinuses are affected by URIs. Symptoms range from the common cold to laryngitis or sinusitis, but most infections pass after a week or two. Upper respiratory infections can affect anyone, regardless of age, race, or gender.
URIs are the most common reason for visits to the doctor. A study shared by the National Centre for Biotechnology Information confirmed between 80%-90% of patients who visit the doctor do so because of one or more URI symptoms such as coughing, sneezing, and a stuffy or runny nose.
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