Upper respiratory tract infection

Not to be confused with UTI.

Upper respiratory tract infection
Conducting passages
SpecialtyInfectious disease, Family medicine, Pediatrics, Otolaryngology
Frequency12.8 billion cases (2021)

An upper respiratory tract infection (URTI) is an illness caused by an acute infection, which involves the upper respiratory tract, including the nose, sinuses, pharynx, larynx or trachea. This commonly includes nasal obstruction, sore throat, tonsillitis, pharyngitis, laryngitis, sinusitis, otitis media, and the common cold. Most infections are viral in nature, and in other instances, the cause is bacterial. URTIs can also be fungal or helminthic in origin, but these are less common.

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