A child has a diagnosis of croup (laryngotracheobronchitis).He has received a corticosteroid and cool mist therapy.His caregiver asks the nurse why the doctor did not order antibiotics.The MOST appropriate response is:

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Laryngotracheobronchitis (croup)is a viral illness that causes narrowing of the upper airway.Symptoms include inspiratory stridor,a barking cough,and hoarseness.The child may have a persistent low-grade fever and a history of profuse nasal drainage with increased respiratory effort for several days.

A Child Has a Diagnosis of Croup (Laryngotracheobronchitis)