What is a URI?
An upper respiratory infection (URI) is an infection affecting the nose, throat, and sinuses. It is most commonly caused by viruses such as the common cold, flu, or COVID-19. These infections spread easily through coughing, sneezing, and direct contact, making them particularly common in children, especially during colder months. While most URIs are mild, they can sometimes lead to complications like ear infections, sinusitis, or bronchitis.