Upper Respiratory Infection Causes and Symptoms

Upper Respiratory Infection Causes and Symptoms

An upper respiratory tract infection (URI) is an infection that affects the upper part of the respiratory system. This includes the nose, throat, and sinuses. People commonly refer to URIs as the “common cold,” and a variety of viruses, including rhinoviruses, coronaviruses, and adenoviruses, can cause them. Sometimes, bacteria can also cause them. What are

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