Human metapnuemovirus infections in hospitalized children and comparison with other respiratory viruses. 2005-2014 prospective study

García-García, María Luz; Calvo, Cristina; Rey, Cristina; Díaz, Beatriz; Molinero, Maria del Mar; Pozo, Francisco; Casas, Inmaculada

Upper respiratory tract infection (URTI) was diagnosed in patients with rhinorrhea and/or cough and no signs of wheezing, dyspnea, crackles or bronchodilator use, with or without fever. Acute expiratory wheezing was considered to be bronchiolitis when it occurred for the first time in children aged less than 2 years following the McConnockie classical criteria [6] . All other episodes of acute expiratory wheezing were considered to be recurrent wheezing [7] . Asthma was diagnosed by the National Asthma Education and Prevention Program guidelines [8] . Laryngotracheobronchitis was associated with inspiratory dyspnea and wheezing. Laryngitis was related to inspiratory dyspnea without wheezing. Cases with both focal infiltrates and consolidation in chest X-rays were, in the absence of wheezing, classified as pneumonia.