In very young infants severity of acute bronchiolitis depends on carried viruses. oleh Christophe Marguet, Marc Lubrano, Marie Gueudin, Pascal Le Roux, Antoine Deschildre, Chantal Forget, Laure Couderc, Daniel Siret, Marie-Dominique Donnou, Michael Bubenheim, Astrid Vabret, François Freymuth