L. L. Jones, Parental and household smoking and the increased risk of bronchitis, bronchiolitis and other lower respiratory infections in infancy: systematic review and meta-analysis, Respiratory Research, vol.10, issue.1, 2011.
DOI : 10.3109/02813439209014037

J. Brouard, A. Vabret, and F. Freymuth, Bien évaluer l'épidémie à VRS. Archives de pédiatrie : organe officiel de la Société française de pédiatrie, 2007.
DOI : 10.1016/s0929-693x(06)80009-6

. Institut-national-de-veille-sanitaire, Situation épidémiologique de la bronchiolite en France métropolitaine, 2014.

E. Grimprel and . Epidémiologie-de-la-bronchiolite-du-nourrisson-en-france, Archives de pédiatrie : organe officiel de la Société, 2001.

F. Freymuth, Les virus des bronchiolites aigües Archives de pédiatrie : organe officiel de la Société française de pédiatrie, 2010.

N. G. Papadopoulos, Association of rhinovirus infection with increased disease severity in acute bronchiolitis. American journal of respiratory and critical care medicine, 2002.

C. Marguet, In Very Young Infants Severity of Acute Bronchiolitis Depends On Carried Viruses, PLoS ONE, vol.119, issue.2, 2009.
DOI : 10.1371/journal.pone.0004596.t004

A. Deschildre, Bronchiolite aigüe du nourrisson Archives de pédiatrie : organe officiel de la Société, 2000.

K. Purcell and J. Fergie, Concurrent Serious Bacterial Infections in 2396 Infants and Children Hospitalized With Respiratory Syncytial Virus Lower Respiratory Tract Infections, Archives of Pediatrics & Adolescent Medicine, vol.156, issue.4, pp.322-326, 2002.
DOI : 10.1001/archpedi.156.4.322

G. Bellon, Bronchiolite aigüe. Histoire naturelle Archives de pédiatrie : organe officiel de la Société, 2001.

G. Bellon, Bronchiolite aigüe du nourrisson. Définition. Archives de pédiatrie : organe officiel de la Société, 2001.

H. Autorité and D. Santé, Pertinence du recours à l'hospitalisation pour bronchiolite, pp.1-18, 2014.

A. M. Gadomski and M. Brower, Bronchodilators for bronchiolitis, Cochrane Database Systematic Reviews, 2010.

L. Hartling, Epinephrine for bronchiolitis, Cochrane Database Systematic Reviews, 2011.
DOI : 10.1002/14651858.cd003123.pub3

F. M. Ducharme, Management of acute bronchiolitis, BMJ, vol.342, issue.apr06 2, 2011.
DOI : 10.1136/bmj.d1658

URL : http://www.bmj.com/cgi/content/short/342/apr06_2/d1658

C. Thumerelle, Aspects thérapeutiques de la bronchiolite du nourrisson, à l'exclusion de la corticothérapie et des bronchodilatateurs Archives de pédiatrie : organe officiel de la Société, 2001.

H. Autorité and D. Santé, Conférence de consensus: Prise en charge de la bronchiolite du nourrisson, pp.1-23, 2000.

L. Roux and P. Bronchiolite-aigüe, Existe-t-il des critères de gravité pour une hospitalisation? Archives de pédiatrie : organe officiel de la Société, 2001.

H. Autorité and D. Santé, Rapport d'évaluation technologique: Principales indications et " non indications " de la radiographie de thorax, pp.1-169, 2009.

E. E. Wang, B. J. Law, and D. Stephens, Pediatric Investigators Collaborative Network on Infections in Canada (PICNIC) prospective study of risk factors and outcomes in patients hospitalized with respiratory syncytial viral lower respiratory tract infection, The Journal of Pediatrics, vol.126, issue.2, 1995.
DOI : 10.1016/S0022-3476(95)70547-3

K. N. Shaw, L. M. Bell, and N. H. Sherman, Outpatient Assessment of Infants With Bronchiolitis, Archives of Pediatrics & Adolescent Medicine, vol.145, issue.2
DOI : 10.1001/archpedi.1991.02160020041012

K. P. Dawson, A. Long, J. Kennedy, and N. Mogridge, The chest radiograph in acute bronchiolitis, Journal of Paediatrics and Child Health, vol.102, issue.4, 1990.
DOI : 10.1007/BF02386634

G. H. Swingler, G. D. Hussey, and M. Zwarenstein, Randomised controlled trial of clinical outcome after chest radiograph in ambulatory acute lower-respiratory infection in children, The Lancet, vol.351, issue.9100, 1998.
DOI : 10.1016/S0140-6736(97)07013-X

B. Mathews, Clinical Predictors of Pneumonia Among Children With Wheezing, PEDIATRICS, vol.124, issue.1, 2009.
DOI : 10.1542/peds.2008-2062

M. I. Neuman, M. C. Monuteaux, K. J. Scully, and R. G. Bachur, Prediction of Pneumonia in a Pediatric Emergency Department, PEDIATRICS, vol.128, issue.2, 2011.
DOI : 10.1542/peds.2010-3367

. Institut-national-de-veille-sanitaire, Exposition de la population française aux rayonnements ionisants liée aux actes de diagnostic médical en, 2007.

D. A. Christakis, Variation in Inpatient Diagnostic Testing and Management of Bronchiolitis, PEDIATRICS, vol.115, issue.4, pp.878-84, 2005.
DOI : 10.1542/peds.2004-1299

S. Schuh, Evaluation of the Utility of Radiography in Acute Bronchiolitis, The Journal of Pediatrics, vol.150, issue.4, 2007.
DOI : 10.1016/j.jpeds.2007.01.005

J. Stagnara, Prise en charge de la bronchiolite du nourrisson Archives de pédiatrie : organe officiel de la Société, 2001.
DOI : 10.1016/s0929-693x(01)80150-0

J. Vanhabost, Identification des facteurs pronostiques de survenue d'asthme du nourrisson après une première bronchiolite aigue virale, pp.1-80, 2011.

D. Che, N. Caillère, and L. Josseran, Surveillance et épidémiologie de la bronchiolite du nourrisson en France. Archives de pédiatrie : organe officiel de la Société, 2008.
DOI : 10.1016/j.arcped.2007.11.014

E. Ecochard-dugelay, Clinical predictors of radiographic abnormalities among infants with bronchiolitis in a paediatric emergency department, BMC Pediatrics, vol.351, issue.9100, 2014.
DOI : 10.1016/S0140-6736(97)07013-X

URL : https://hal.archives-ouvertes.fr/hal-01311051

V. J. King, Pharmacologic Treatment of Bronchiolitis in Infants and Children, Archives of Pediatrics & Adolescent Medicine, vol.158, issue.2, 2004.
DOI : 10.1001/archpedi.158.2.127

T. Florin, Variation in the Management of Infants Hospitalized for Bronchiolitis Persists after the, American Academy of Pediatrics Bronchiolitis Guidelines. The Journal of pediatrics, 2006.

K. Parikh, M. Hall, and S. J. Teach, Bronchiolitis Management Before and After the AAP Guidelines, PEDIATRICS, vol.133, issue.1, pp.1-7, 2013.
DOI : 10.1542/peds.2013-2005

L. W. Johnson, Management of Bronchiolitis in the Emergency Department: Impact of Evidence-Based Guidelines?, Pediatrics, vol.131, issue.Supplement 1, pp.103-112, 2013.
DOI : 10.1542/peds.2012-1427m

A. C. Plint, Practice Variation among Pediatric Emergency Departments in the Treatment of Bronchiolitis, Academic Emergency Medicine, vol.152, issue.4, pp.353-60, 2004.
DOI : 10.1197/j.aem.2003.12.003

J. M. Mansbach, Prospective Multicenter Study of Bronchiolitis: Predicting Safe Discharges From the Emergency Department, PEDIATRICS, vol.121, issue.4, 2008.
DOI : 10.1542/peds.2007-1418

A. Carsin, La radiographie de thorax chez le nourrisson hospitalisé pour bronchiolite aiguë : réelle information ou simple irradiation ? Archives de pédiatrie : organe officiel de la Société française de pédiatrie 19, pp.1308-1323, 2012.
DOI : 10.1016/j.arcped.2012.09.019

M. C. Kneyber, K. G. Moons, R. De-groot, and H. A. Moll, Predictors of a normal chest x???ray in respiratory syncytial virus infection, Pediatric Pulmonology, vol.31, issue.4, pp.277-83, 2001.
DOI : 10.1002/ppul.1039

E. M. Mahabee-gittens, D. T. Bachman, E. D. Shapiro, and M. D. Dowd, Chest Radiographs in the Pediatric Emergency Department for Children <=18 Months of Age with Wheezing, Clinical Pediatrics, vol.38, issue.7, pp.395-404, 1999.
DOI : 10.1177/000992289903800703

J. H. Yong, A cost effectiveness analysis of omitting radiography in diagnosis of acute bronchiolitis, Pediatric Pulmonology, vol.327, issue.2, pp.122-129, 2009.
DOI : 10.1002/ppul.20948

M. M. Farah, L. B. Padgett, D. J. Mclario, K. M. Sullivan, and H. K. Simon, First-time wheezing in infants during respiratory syncytial virus season: Chest radiograph findings, Pediatric Emergency Care, vol.18, issue.5, pp.333-339, 2002.
DOI : 10.1097/00006565-200210000-00001

L. Garcia, Radiograf??a de t??rax en la bronquiolitis: ??es siempre necesaria?, Anales de Pediatr??a, vol.61, issue.3, pp.219-244, 2004.
DOI : 10.1016/S1695-4033(04)78800-1

C. M. Walsh-kelly, M. K. Kim, and H. M. Hennes, Chest Radiography in the Initial Episode of Bronchospasm in Children: Can Clinical Variables Predict Pathologic Findings?, Annals of Emergency Medicine, vol.28, issue.4, pp.391-396, 1996.
DOI : 10.1016/S0196-0644(96)70002-1

G. J. Williams, Variability and accuracy in interpretation of consolidation on chest radiography for diagnosing pneumonia in children under 5 years of age, Pediatric Pulmonology, vol.57, issue.12, pp.1195-200, 2013.
DOI : 10.1002/ppul.22806

E. J. Klein, M. Koenig, D. S. Diekema, and W. Winters, Discordant radiograph interpretation between emergency physicians and radiologists in a pediatric emergency department, Pediatric Emergency Care, vol.15, issue.4, pp.245-253, 1999.
DOI : 10.1097/00006565-199915040-00002

A. S. El-radhi, W. Barry, and S. Patel, Association of fever and severe clinical course in bronchiolitis, Archives of Disease in Childhood, vol.81, issue.3, pp.231-235, 1999.
DOI : 10.1136/adc.81.3.231

P. Papoff, Incidence and predisposing factors for severe disease in previously healthy term infants experiencing their first episode of bronchiolitis, Acta Paediatrica, vol.4, issue.7, pp.17-23, 2011.
DOI : 10.1111/j.1651-2227.2011.02181.x

J. C. Celedon, Day care attendance in early life, maternal history of asthma, and asthma at the age of 6 years. American journal of respiratory and critical care medicine 167, pp.1239-1282, 2002.

T. M. Ball, Siblings, Day-Care Attendance, and the Risk of Asthma and Wheezing during Childhood, New England Journal of Medicine, vol.343, issue.8, pp.538-581, 2000.
DOI : 10.1056/NEJM200008243430803

F. D. Gilliland, Y. F. Li, and J. M. Peters, Effects of maternal smoking during pregnancy and environmental tobacco smoke on asthma and wheezing in children American journal of respiratory and critical care medicine 163, pp.429-465, 2001.