Croup is commonly caused by the human parainfluenza virus i Causes upper and lower respiratory infections in children and adults, such as colds, pneumonia, and bronchitis. (types 1 and 3). However ...

rch.org.au The Omicron variant of SARS-CoV-2 has been linked to upper airway manifestations, including laryngotracheobronchitis, or croup.1–3 Croup from any cause is a common reason for hospital ...

Viral croup often presents similarly to an upper respiratory infection, with 12-72 h of low-grade fever and coryza. Narrowing of the larynx leads to stridor, increased respiratory rate, respiratory ...