Colds: An Overview and More

The upper respiratory tract includes the nose, sinuses, and throat. Upper respiratory tract infections (URIs), such as the common cold, are common causes of illness. They are caused by hundreds of cold viruses, influenza A and B, parainfluenza viruses, bocaviruses, and many other pathogens. Symptoms include a stuffy nose, runny nose, sneezing, sore throat, and cough.

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