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Editorial
The author argues that croup should be classified as an acute upper-airway disease rather than a lower respiratory tract infection.
Human Metapneumovirus and Lower Respiratory Tract Disease in Childrento the editor: The case definition of croup given by Williams et al. in their study of metapneumovirus (Jan.29 issue) 1 seems misleading.The authors state that croup is an "acute lower respiratory tract infection characterized by hoarseness, cough, and stridor."On the contrary, croup is classified as an acute upper-airway disease in several textbooks of pediatrics. [2]3][4] Recognizing croup as an important cause of acute upper-airway obstruction and its pertinent features, as distinct from life-threatening bacterial epiglottitis, is the classic point made in medical teaching worldwide.
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Principi et al. (2004) studied this question.
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