Fatal hemorrhagic pneumonia caused by human metapneumovirus in an immunocompetent child

Human metapneumovirus (hMPV) was recently discovered in 2001 in Holland. This agent causes acute respiratory tract infections in children and adults.1 The range of clinical manifestations varies from asymptomatic infection to severe pneumonia and acute respiratory failure.1–3 When this agent coexists with the respiratory syncytial virus (RSV) in bronchiolitis, symptoms are more severe.4 Williams et al. found, in more than 25 years of...