I. Type-d-'étude and .. , 33 II. Analyse des hémocultures prélevées sur un an, p.33

. Parmi, 63% étaient considérées comme sévères (grade? 2, n=52) Les localisations de la GVH étaient cutanées chez 52 patients, digestives chez 38 patients (62%) et hépatiques chez 11 patients (18%)

. La-fréquence-cardiaque-médiane-Était-comparable-entre-cas, Q3 : 75 ; 99] (min, max : 50 ; 146)) et témoins (87 bpm [Q1 ; Q3 : 78, pp.3-53

L. Dans, 43% des cas entre J-2 et le jour de l'hémoculture (n=46) La médiane d'augmentation était de 7 bpm [Q1, p.75

. Le-taux-médian-de-leucocytes, et la valeur médiane de la CRP le jour de l'hémoculture étaient respectivement de 5,49x10 9 /l [Q1 ; Q3 : 1,78, et de 12 mg, p.39

M. Michallet, Allogreffes de cellules souches h??matopo????tiques, Transfusion Clinique et Biologique, vol.18, issue.2, pp.235-280, 2011.
DOI : 10.1016/j.tracli.2011.02.021

C. A. Dykewicz, Summary of the Guidelines for Preventing Opportunistic Infections among Hematopoietic Stem Cell Transplant Recipients, Clinical Infectious Diseases, vol.33, issue.2, pp.139-183, 2001.
DOI : 10.1086/321805

C. Ramaprasad and K. Pursell, Infectious Complications of Stem Cell Transplantation, Cancer Treat Res, vol.161, pp.351-70, 2014.
DOI : 10.1007/978-3-319-04220-6_12

L. Agence-de and . Biomédecine, Activité nationale de greffe de CSH, 2012.

E. Meyer, J. Beyersmann, H. Bertz, S. Wenzler-röttele, R. Babikir et al., Risk factor analysis of blood stream infection and pneumonia in neutropenic patients after peripheral blood stem-cell transplantation, Bone Marrow Transplantation, vol.153, issue.3, pp.173-181, 2007.
DOI : 10.1053/bbmt.2002.v8.pm12374456

E. Engels, C. Ellis, S. Supran, C. Schmid, M. Barza et al., Early Infection in Bone Marrow Transplantation: Quantitative Study of Clinical Factors That Affect Risk, Clinical Infectious Diseases, vol.28, issue.2, pp.256-66, 1999.
DOI : 10.1086/515103

C. Junghanss, K. Marr, R. Carter, B. Sandmaier, M. Maris et al., Incidence and outcome of bacterial and fungal infections following nonmyeloablative compared with myeloablative allogeneic hematopoietic stem cell transplantation: A matched control study, Biology of Blood and Marrow Transplantation, vol.8, issue.9, pp.512-532, 2002.
DOI : 10.1053/bbmt.2002.v8.pm12374456

J. Ferrara, K. Cooke, L. Pan, and W. Krenger, The Immunopathophysiology of Acute Graft‐Versus‐Host‐Disease, Stem Cells, vol.86, issue.5, pp.473-89, 1996.
DOI : 10.1002/stem.140473

D. Weisdorf, Graft versus Host Disease and how to report it; Disponible sur http, 2006.

M. Dettenkofer, S. Wenzler-röttele, R. Babikir, H. Bertz, W. Ebner et al., Surveillance of Nosocomial Sepsis and Pneumonia in Patients with a Bone Marrow or Peripheral Blood Stem Cell Transplant: A Multicenter Project, Clinical Infectious Diseases, vol.40, issue.7, pp.926-957, 2005.
DOI : 10.1086/428046

D. Poutsiaka, D. Munson, L. Price, G. Chan, and D. Snydman, Blood stream infection (BSI) and acute GVHD after hematopoietic SCT (HSCT) are associated, Bone Marrow Transplantation, vol.30, issue.2, pp.300-307, 2011.
DOI : 10.1016/j.transproceed.2006.08.057

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3049187

M. Mikulska, D. Bono, V. Bruzzi, P. Raiola, A. Gualandi et al., Mortality after bloodstream infections in allogeneic haematopoietic stem cell transplant (HSCT) recipients, Infection, vol.18, issue.3, pp.271-279, 2012.
DOI : 10.1007/s15010-011-0229-y

P. Cappellano, C. Viscoli, P. Bruzzi, V. Lint, M. Pereira et al., Epidemiology and risk factors for bloodstream infections after allogeneic hematopoietic stem cell transplantion, New Microbiol, vol.30, pp.89-99, 2007.

B. Collin, H. Leather, J. Wingard, and R. Ramphal, Evolution, Incidence, and Susceptibility of Bacterial Bloodstream Isolates from 519 Bone Marrow Transplant Patients, Clinical Infectious Diseases, vol.33, issue.7, pp.947-53, 2001.
DOI : 10.1086/322604

E. Ninin, N. Milpied, P. Moreau, B. André-richet, N. Morineau et al., Longitudinal Study of Bacterial, Viral, and Fungal Infections in Adult Recipients of Bone Marrow Transplants, Clinical Infectious Diseases, vol.33, issue.1, pp.41-48, 2001.
DOI : 10.1086/320871

A. Bock, Q. Cao, P. Ferrieri, J. Young, and D. Weisdorf, Bacteremia in Blood or Marrow Transplantation Patients: Clinical Risk Factors for Infection and Emerging Antibiotic Resistance, Biology of Blood and Marrow Transplantation, vol.19, issue.1, pp.102-110, 2013.
DOI : 10.1016/j.bbmt.2012.08.016

D. Poutsiaka, L. Price, A. Ucuzian, G. Chan, K. Miller et al., Blood stream infection after hematopoietic stem cell transplantation is associated with increased mortality, Bone Marrow Transplantation, vol.9, issue.1, pp.63-70, 2007.
DOI : 10.1038/sj.bmt.1705690

P. Frère, J. Hermanne, M. Debouge, P. De-mol, G. Fillet et al., Bacteremia after hematopoietic stem cell transplantation: incidence and predictive value of surveillance cultures, Bone Marrow Transplantation, vol.33, issue.7, pp.745-754, 2004.
DOI : 10.1038/sj.bmt.1704414

O. Penack, P. Rempf, M. Eisenblätter, A. Stroux, J. Wagner et al., Bloodstream infections in neutropenic patients: early detection of pathogens and directed antimicrobial therapy due to surveillance blood cultures, Annals of Oncology, vol.18, issue.11, pp.1870-1874, 2007.
DOI : 10.1093/annonc/mdm351

C. Liu, Y. Lai, L. Huang, Y. Yang, T. Chen et al., Impact of bloodstream infections on outcome and the influence of prophylactic oral antibiotic regimens in allogeneic hematopoietic SCT recipients, Bone Marrow Transplantation, vol.12, issue.9, pp.1231-1240, 2011.
DOI : 10.1038/bmt.2010.286

O. Blennow, P. Ljungman, E. Sparrelid, J. Mattsson, and M. Remberger, Incidence, risk factors, and outcome of bloodstream infections during the pre-engraftment phase in 521 allogeneic hematopoietic stem cell transplantations, Transplant Infectious Disease, vol.13, issue.5, pp.106-120, 2014.
DOI : 10.1111/tid.12175

M. Mikulska, D. Bono, V. Raiola, A. Bruno, B. Gualandi et al., Blood Stream Infections in Allogeneic Hematopoietic Stem Cell Transplant Recipients: Reemergence of Gram-Negative Rods and Increasing Antibiotic Resistance, Biology of Blood and Marrow Transplantation, vol.15, issue.1, pp.47-53, 2009.
DOI : 10.1016/j.bbmt.2008.10.024

M. Weinstein, M. Towns, S. Quartey, S. Mirrett, L. Reimer et al., The Clinical Significance of Positive Blood Cultures in the 1990s: A Prospective Comprehensive Evaluation of the Microbiology, Epidemiology, and Outcome of Bacteremia and Fungemia in Adults, Clinical Infectious Diseases, vol.24, issue.4, pp.584-602, 1997.
DOI : 10.1093/clind/24.4.584

M. Lin, R. Weinstein, and B. Hota, Delay of Active Antimicrobial Therapy and Mortality among Patients with Bacteremia: Impact of Severe Neutropenia, Antimicrobial Agents and Chemotherapy, vol.52, issue.9, pp.3188-94, 2008.
DOI : 10.1128/AAC.01553-07

A. Van-den-bogaard, Antimicrobial resistance--relation to human and animal exposure to antibiotics, Journal of Antimicrobial Chemotherapy, vol.40, issue.3, pp.453-457, 1997.
DOI : 10.1093/jac/40.3.453

P. Hsueh, W. Chen, and K. Luh, Relationships between antimicrobial use and antimicrobial resistance in Gram-negative bacteria causing nosocomial infections from 1991???2003 at a university hospital in Taiwan, International Journal of Antimicrobial Agents, vol.26, issue.6, pp.463-72, 2005.
DOI : 10.1016/j.ijantimicag.2005.08.016

B. Bell, F. Schellevis, E. Stobberingh, H. Goossens, and M. Pringle, A systematic review and meta-analysis of the effects of antibiotic consumption on antibiotic resistance, BMC Infectious Diseases, vol.16, issue.10, p.13, 2014.
DOI : 10.1016/S0169-5347(01)02235-2

A. Oliveira, M. De-souza, V. Carvalho-dias, M. Ruiz, L. Silla et al., Epidemiology of bacteremia and factors associated with multi-drug-resistant gram-negative bacteremia in hematopoietic stem cell transplant recipients, Bone Marrow Transplantation, vol.89, issue.12, pp.775-81, 2007.
DOI : 10.1038/sj.bmt.1705677

M. Satlin, D. Calfee, L. Chen, K. Fauntleroy, S. Wilson et al., Emergence of carbapenem-resistant Enterobacteriaceae as causes of bloodstream infections in patients with hematologic malignancies, Leukemia & Lymphoma, vol.137, issue.4, pp.799-806, 2013.
DOI : 10.1179/joc.2005.17.Supplement-1.12

M. Satlin, R. Soave, A. Racanelli, T. Shore, K. Van-besien et al., The emergence of vancomycin-resistant enterococcal bacteremia in hematopoietic stem cell transplant recipients, Leukemia & Lymphoma, vol.40, issue.12, 2014.
DOI : 10.7326/0003-4819-84-3-304

J. Rodríguez-baño, E. Picón, P. Gijón, J. Hernández, J. Cisneros et al., Risk Factors and Prognosis of Nosocomial Bloodstream Infections Caused by Extended-Spectrum-??-Lactamase-Producing Escherichia coli, Journal of Clinical Microbiology, vol.48, issue.5, pp.1726-1757, 2010.
DOI : 10.1128/JCM.02353-09

D. Marchaim, T. Gottesman, O. Schwartz, M. Korem, Y. Maor et al., National Multicenter Study of Predictors and Outcomes of Bacteremia upon Hospital Admission Caused by Enterobacteriaceae Producing Extended-Spectrum ??-Lactamases, Antimicrobial Agents and Chemotherapy, vol.54, issue.12, pp.5099-104, 2010.
DOI : 10.1128/AAC.00565-10

C. Gudiol, F. Tubau, L. Calatayud, C. Garcia-vidal, M. Cisnal et al., Bacteraemia due to multidrug-resistant Gram-negative bacilli in cancer patients: risk factors, antibiotic therapy and outcomes, Journal of Antimicrobial Chemotherapy, vol.66, issue.3, pp.657-63, 2011.
DOI : 10.1093/jac/dkq494

D. Caselli, S. Cesaro, O. Ziino, G. Zanazzo, R. Manicone et al., Multidrug resistant Pseudomonas aeruginosa infection in children undergoing chemotherapy and hematopoietic stem cell transplantation, Haematologica, vol.95, issue.9, pp.1612-1617, 2010.
DOI : 10.3324/haematol.2009.020867

J. Vydra, R. Shanley, I. George, C. Ustun, A. Smith et al., Enterococcal Bacteremia Is Associated With Increased Risk of Mortality in Recipients of Allogeneic Hematopoietic Stem Cell Transplantation, Clinical Infectious Diseases, vol.55, issue.6, pp.764-70, 2012.
DOI : 10.1093/cid/cis550

C. Gudiol, L. Calatayud, C. Garcia-vidal, J. Lora-tamayo, M. Cisnal et al., Bacteraemia due to extended-spectrum ??-lactamase-producing Escherichia coli (ESBL-EC) in cancer patients: clinical features, risk factors, molecular epidemiology and outcome, Journal of Antimicrobial Chemotherapy, vol.65, issue.2, pp.333-374, 2010.
DOI : 10.1093/jac/dkp411

G. Hernández, A. García-vázquez, E. , G. Gómez, J. Canteras et al., Predictive factors of ESBL versus non- ESBL Escherichia coli bacteraemia and influence of resistance on the mortality of the patients, pp.56-60, 2011.

B. Denis, M. Lafaurie, J. Donay, J. Fontaine, E. Oksenhendler et al., Prevalence, risk factors and impact on clinical outcome of ESBL producing Escherichia coli bacteraemia: a 5 year study

D. Averbuch, C. Cordonnier, D. Livermore, M. Mikulska, C. Orasch et al., Targeted therapy against multi-resistant bacteria in leukemic and hematopoietic stem cell transplant recipients: guidelines of the 4th European Conference on Infections in Leukemia (ECIL-4, 2011), 4th European Conference on Infections in Leukemia (ECIL-4, pp.1836-1883, 2011.
DOI : 10.3324/haematol.2013.091330

B. Kanathezhath, A. Shah, R. Secola, M. Hudes, and J. Feusner, The Utility of Routine Surveillance Blood Cultures in Asymptomatic Hematopoietic Stem Cell Transplant Patients, Journal of Pediatric Hematology/Oncology, vol.32, issue.4, pp.327-358, 2010.
DOI : 10.1097/MPH.0b013e3181ced36c

G. Bodey, M. Buckley, Y. Sathe, and E. Freireich, Quantitative Relationships Between Circulating Leukocytes and Infection in Patients with Acute Leukemia, Annals of Internal Medicine, vol.64, issue.2, pp.328-368, 1966.
DOI : 10.7326/0003-4819-64-2-328

H. Elishoov, R. Or, N. Strauss, and D. Engelhard, Nosocomial Colonization, Septicemia, and Ilickman/Broviac Catheter-Related Infections in Bone Marrow Transplant Recipients: A 5-Year Prospective Study, Medicine, vol.77, issue.2, pp.83-101, 1998.
DOI : 10.1097/00005792-199803000-00002

M. Daw, P. Munnelly, S. Mccann, P. Daly, F. Falkiner et al., Value of surveillance cultures in the management of neutropenic patients, European Journal of Clinical Microbiology & Infectious Diseases, vol.30, issue.6, pp.742-749, 1988.
DOI : 10.1007/BF01975040

M. Cohen, M. Murphy, G. Counts, C. Buckner, R. Clift et al., Prediction by Surveillance Cultures of Bacteremia among Neutropenic Patients Treated in a Protective Environment, Journal of Infectious Diseases, vol.147, issue.5, pp.789-93, 1983.
DOI : 10.1093/infdis/147.5.789

B. Liss, J. Vehreschild, O. Cornely, M. Hallek, G. Fätkenheuer et al., Intestinal colonisation and blood stream infections due to vancomycin-resistant enterococci (VRE) and extended-spectrum beta-lactamase-producing Enterobacteriaceae (ESBLE) in patients with haematological and oncological malignancies, Infection, vol.35, issue.6, pp.613-622, 2012.
DOI : 10.1007/s15010-012-0269-y

J. Wingard, J. Dick, P. Charache, and R. Saral, Antibiotic-resistant bacteria in surveillance stool cultures of patients with prolonged neutropenia., Antimicrobial Agents and Chemotherapy, vol.30, issue.3, pp.435-444, 1986.
DOI : 10.1128/AAC.30.3.435

Y. Taur, J. Xavier, L. Lipuma, C. Ubeda, J. Goldberg et al., Intestinal Domination and the Risk of Bacteremia in Patients Undergoing Allogeneic Hematopoietic Stem Cell Transplantation, Clinical Infectious Diseases, vol.55, issue.7, pp.905-919, 2012.
DOI : 10.1093/cid/cis580

C. Ubeda, Y. Taur, R. Jenq, M. Equinda, T. Son et al., Vancomycin-resistant Enterococcus domination of intestinal microbiota is enabled by antibiotic treatment in mice and precedes bloodstream invasion in humans, Journal of Clinical Investigation, vol.120, issue.12, pp.4332-4373, 2010.
DOI : 10.1172/JCI43918DS1

H. Sayer, G. Longton, R. Bowden, M. Pepe, and R. Storb, Increased risk of infection in marrow transplant patients receiving methylprednisolone for graft-versus-host disease prevention, Blood, vol.84, pp.1328-1360, 1994.

I. Chaberny, E. Ruseva, D. Sohr, S. Buchholz, A. Ganser et al., Surveillance with successful reduction of central line-associated bloodstream infections among neutropenic patients with hematologic or oncologic malignancies, Annals of Hematology, vol.7, issue.9, pp.907-919, 2009.
DOI : 10.1007/s00277-008-0687-1

URL : https://hal.archives-ouvertes.fr/hal-00535023

T. Horan, M. Andrus, and M. Dudeck, CDC/NHSN surveillance definition of health care???associated infection and criteria for specific types of infections in the acute care setting, American Journal of Infection Control, vol.36, issue.5, pp.309-341, 2008.
DOI : 10.1016/j.ajic.2008.03.002

I. See, M. Iwamoto, K. Allen-bridson, T. Horan, S. Magill et al., Conclusions., Infection Control & Hospital Epidemiology, vol.15, issue.08, pp.769-76, 2013.
DOI : 10.1086/667380

J. Steinberg, C. Robichaux, S. Tejedor, M. Reyes, and J. Jacob, Conclusions., Infection Control & Hospital Epidemiology, vol.47, issue.02, pp.171-176, 2013.
DOI : 10.1016/j.ajic.2008.03.002

R. Everts, E. Vinson, P. Adholla, and L. Reller, Contamination of Catheter-Drawn Blood Cultures, Journal of Clinical Microbiology, vol.39, issue.9, pp.3393-3397, 2001.
DOI : 10.1128/JCM.39.9.3393-3394.2001

E. Mcbryde, M. Tilse, and J. Mccormack, Comparison of contamination rates of catheter-drawn and peripheral blood cultures, Journal of Hospital Infection, vol.60, issue.2, pp.118-139, 2005.
DOI : 10.1016/j.jhin.2004.10.020

Y. Alahmadi, M. Aldeyab, J. Mcelnay, M. Scott, D. Elhajji et al., Clinical and economic impact of contaminated blood cultures within the hospital setting, Journal of Hospital Infection, vol.77, issue.3, pp.233-239, 2011.
DOI : 10.1016/j.jhin.2010.09.033

L. Rodríguez, M. Ethier, B. Phillips, T. Lehrnbecher, J. Doyle et al., Utility of peripheral blood cultures in patients with cancer and suspected blood stream infections: a systematic review, Supportive Care in Cancer, vol.1, issue.12, pp.3261-3268, 2012.
DOI : 10.1007/s00520-012-1471-2

M. Weinstein, Blood Culture Contamination: Persisting Problems and Partial Progress, Journal of Clinical Microbiology, vol.41, issue.6, pp.2275-2283, 2003.
DOI : 10.1128/JCM.41.6.2275-2278.2003

URL : http://www.ncbi.nlm.nih.gov/pmc/articles/PMC156489

A. Stuck, C. Minder, and F. Frey, Risk of Infectious Complications in Patients Taking Glucocorticosteroids, Clinical Infectious Diseases, vol.11, issue.6, pp.954-63, 1989.
DOI : 10.1093/clinids/11.6.954

A. Coutinho and K. Chapman, The anti-inflammatory and immunosuppressive effects of glucocorticoids, recent developments and mechanistic insights, Molecular and Cellular Endocrinology, vol.335, issue.1, pp.2-13, 2011.
DOI : 10.1016/j.mce.2010.04.005

A. Joosten, J. Maertens, J. Verhaegen, T. Lodewyck, E. Vermeulen et al., High incidence of bloodstream infection detected by surveillance blood cultures in hematology patients on corticosteroid therapy, Supportive Care in Cancer, vol.18, issue.11, pp.3013-3020, 2012.
DOI : 10.1007/s00520-012-1557-x

P. Knudsen, C. Dinarello, and T. Strom, Glucocorticoids inhibit transcriptional and post-transcriptional expression of interleukin 1 in U937 cells, J Immunol, vol.139, pp.4129-4163, 1987.

T. Fukuda, M. Boeckh, R. Carter, B. Sandmaier, M. Maris et al., Risks and outcomes of invasive fungal infections in recipients of allogeneic hematopoietic stem cell transplants after nonmyeloablative conditioning, Blood, vol.102, issue.3, pp.827-860, 2003.
DOI : 10.1182/blood-2003-02-0456

A. Safdar, G. Rodriguez, C. Mihu, L. Mora-ramos, V. Mulanovich et al., Infections in non-myeloablative hematopoietic stem cell transplantation patients with lymphoid malignancies: spectrum of infections, predictors of outcome and proposed guidelines for fungal infection prevention, Bone Marrow Transplantation, vol.23, issue.2, pp.339-386, 2010.
DOI : 10.1016/j.bbmt.2007.09.004

L. Li, J. Wang, W. Zhang, Y. J. Chen, L. Lv et al., Risk factors for invasive mold infections following allogeneic hematopoietic stem cell transplantation: A single center study of 190 recipients, Scandinavian Journal of Infectious Diseases, vol.50, issue.2, pp.100-107, 2012.
DOI : 10.1016/j.diagmicrobio.2007.06.008

C. Dvorak, W. Steinbach, J. Brown, and R. Agarwal, Risks and outcomes of invasive fungal infections in pediatric patients undergoing allogeneic hematopoietic cell transplantation, Bone Marrow Transplantation, vol.75, issue.7, pp.621-630, 2005.
DOI : 10.1038/sj.bmt.1705113

T. Ng, G. Robson, and D. Denning, Hydrocortisone-enhanced growth of Aspergillus spp.: implications for pathogenesis, Microbiology, vol.140, issue.9, pp.2475-2484, 1994.
DOI : 10.1099/13500872-140-9-2475

D. Dix, S. Cellot, V. Price, B. Gillmeister, M. Ethier et al., Association Between Corticosteroids and Infection, Sepsis, and Infectious Death in Pediatric Acute Myeloid Leukemia (AML): Results From the Canadian Infections in AML Research Group, Clinical Infectious Diseases, vol.55, issue.12, pp.1608-1622, 2012.
DOI : 10.1093/cid/cis774

A. Chizuka, M. Kami, Y. Kanda, N. Murashige, Y. Kishi et al., Value of surveillance blood culture for early diagnosis of occult bacteremia in patients on corticosteroid therapy following allogeneic hematopoietic stem cell transplantation, Bone Marrow Transplantation, vol.35, issue.6, pp.577-82, 2005.
DOI : 10.1038/sj.bmt.1704830

A. Freifeld, E. Bow, K. Sepkowitz, M. Boeckh, J. Ito et al., Clinical Practice Guideline for the Use of Antimicrobial Agents in Neutropenic Patients with Cancer: 2010 Update by the Infectious Diseases Society of America, Clinical Infectious Diseases, vol.52, issue.4, pp.56-93, 2011.
DOI : 10.1093/cid/cir073

O. Grady, N. Barie, P. Bartlett, J. Bleck, T. Carroll et al., Guidelines for evaluation of new fever in critically ill adult patients: 2008 update from the American College of Critical Care Medicine and the Infectious Diseases Society of America, Crit Care Med, vol.36, pp.1330-1379, 2008.

M. Wilson, M. Mitchell, A. Morris, L. Reimer, L. Reller et al., Principles and procedures for blood cultures; approved guideline. CLSI document M47-A, 2007.

J. Thylefors, S. Harbarth, and D. Pittet, Increasing Bacteremia Due to Coagulase-Negative Staphylococci: Fiction or Reality?, Infection Control and Hospital Epidemiology, vol.19, issue.8, pp.581-590, 1998.
DOI : 10.2307/30141785

S. Beekmann, D. Diekema, and G. Doern, Conclusion:, Infection Control & Hospital Epidemiology, vol.51, issue.06, pp.559-66, 2005.
DOI : 10.1067/mic.2002.118406

D. Souvenir, D. Anderson, S. Palpant, H. Mroch, S. Askin et al., Blood cultures positive for coagulase-negative staphylococci: antisepsis, pseudobacteremia, and therapy of patients, J Clin Microbiol, vol.36, 1998.

L. Elzi, B. Babouee, N. Vögeli, R. Laffer, M. Dangel et al., How to discriminate contamination from bloodstream infection due to coagulase-negative staphylococci: a prospective study with 654 patients, Clinical Microbiology and Infection, vol.18, issue.9, pp.355-61, 2012.
DOI : 10.1111/j.1469-0691.2012.03964.x

D. Bates, L. Goldman, and T. Lee, Contaminant blood cultures and resource utilization. The true consequences of false-positive results, JAMA: The Journal of the American Medical Association, vol.265, issue.3, pp.365-374, 1991.
DOI : 10.1001/jama.265.3.365

R. Khatib, K. Riederer, J. Clark, S. Khatib, L. Briski et al., Coagulase-negative staphylococci in multiple blood cultures: strain relatedness and determinants of same-strain bacteremia, J Clin Microbiol, vol.33, pp.816-836, 1995.

S. Kim, L. Mcdonald, W. Jarvis, S. Mcallister, R. Jerris et al., Conclusions:, Infection Control & Hospital Epidemiology, vol.23, issue.03, pp.213-220, 2000.
DOI : 10.1093/infdis/169.6.1393

C. Lee, W. Lin, H. Shih, C. Wu, P. Chen et al., Clinical significance of potential contaminants in blood cultures among patients in a medical center, J Microbiol Immunol Infect, vol.40, pp.438-482, 2007.

L. Mermel, M. Allon, E. Bouza, D. Craven, P. Flynn et al., Clinical Practice Guidelines for the Diagnosis and Management of Intravascular Catheter???Related Infection: 2009 Update by the Infectious Diseases Society of America, Clinical Infectious Diseases, vol.49, issue.1, pp.1-45, 2009.
DOI : 10.1086/599376

C. Grace, J. Lieberman, K. Pierce, and B. Littenberg, Usefulness of Blood Culture for Hospitalized Patients Who Are Receiving Antibiotic Therapy, Clinical Infectious Diseases, vol.32, issue.11, pp.1651-1656, 2001.
DOI : 10.1086/320527

R. Mckenzie and L. Reimer, Effect of antimicrobials on blood cultures in endocarditis, Diagnostic Microbiology and Infectious Disease, vol.8, issue.3, pp.165-72, 1987.
DOI : 10.1016/0732-8893(87)90167-2

J. Serody, M. Berrey, K. Albritton, O. Brien, S. Capel et al., Utility of obtaining blood cultures in febrile neutropenic patients undergoing bone marrow transplantation, Bone Marrow Transplantation, vol.26, issue.5, pp.533-541, 2000.
DOI : 10.1038/sj.bmt.1702535

D. Klaucke, J. Buehler, S. Thacker, R. Parrish, and F. Trowbridge, Berkelman RL and the Surveillance Coordination Group Guidelines for Evaluating Surveillance Systems. Disponible sur http, 1988.

P. Levin, M. Hersch, B. Rudensky, and A. Yinnon, Routine surveillance blood cultures: Their place in the management of critically III patients, Journal of Infection, vol.35, issue.2, pp.125-133, 1997.
DOI : 10.1016/S0163-4453(97)91479-1

R. Lepeule, M. Lafaurie, J. Donay, and E. Cambau, Optimisation de la prescription d'antibiotiques liée aux hémocultures positives à staphylocoques à coagulase négative : intérêt d'une équipe mobile. Session d'affiches. RICAI, pp.3-4, 2009.

H. Rigby, C. Fernandez, J. Langley, T. Mailman, B. Crooks et al., Routine Surveillance for Bloodstream Infections in a Pediatric Hematopoietic Stem Cell Transplant Cohort: Do Patients Benefit?, Canadian Journal of Infectious Diseases and Medical Microbiology, vol.18, issue.4, pp.253-259, 2007.
DOI : 10.1155/2007/719794

L. Nesher, V. Mulanovich, H. Chitra, and K. Rolston, The Utility of Routine Surveillance Blood Cultures in Asymptomatic Hematopoietic Stem Cell Transplant Recipients. IDWeek 2012 Meeting, 2012.

S. Ghazal, M. Stevens, G. Bearman, and M. Edmond, Utility of surveillance blood cultures in patients undergoing hematopoietic stem cell transplantation, Antimicrobial Resistance and Infection Control, vol.3, issue.1, p.20, 2014.
DOI : 10.1186/2047-2994-3-20

O. Penack, U. Keilholz, E. Thiel, and I. Blau, Value of surveillance blood cultures in neutropenic patients--a pilot study, Jpn J Infect Dis, vol.58, pp.171-174, 2005.

R. Ram, M. Yeshurun, L. Farber, L. Leibovici, C. Herscovici et al., Elevation of CRP precedes bloodstream infections in patients undergoing hematopoietic cell transplantation. A case-control study, 54 th ASH Annual Meeting and Exposition, 2012.

J. Freeman, D. Anderson, and D. Sexton, Enterococcus Species and the Central Line???Associated Bloodstream Infection Surveillance Definition: Evaluating the Importance of Blood Culture Contamination, Infection Control & Hospital Epidemiology, vol.34, issue.07, pp.762-765, 2013.
DOI : 10.1093/clind/24.4.584

K. Jindai, M. Strerath, T. Hess, and N. Safdar, Is a single positive blood culture for Enterococcus species representative of infection or contamination? Eur, J Clin Microbiol Infect Dis, 2014.

S. Ku, P. Hsueh, P. Yang, and K. Luh, Clinical and Microbiological Characteristics of Bacteremia Caused by Acinetobacter lwoffii, European Journal of Clinical Microbiology & Infectious Diseases, vol.19, issue.7, pp.501-506, 2000.
DOI : 10.1007/s100960000315