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Abdeljelil NB, Ouerghi R, Yaiche IB, Moussa AB, Chebbi Y, Othman TB. Early bacteremia following allogeneic hematopoietic stem cell transplantation without antibiotic prophylaxis: epidemiology and antimicrobial resistance. Hematol Transfus Cell Ther 2024:S2531-1379(24)00301-8. [PMID: 39341750 DOI: 10.1016/j.htct.2024.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/05/2024] [Accepted: 05/06/2024] [Indexed: 10/01/2024] Open
Abstract
OBJECTIVE Bacteremia is a serious complication in patients undergoing allogeneic hematopoietic stem cell transplantation. The aim of this study was to determine the frequency, epidemiological profile, and risk factors of bacteremia early after allogeneic hematopoietic stem cell transplantation. METHODS An observational descriptive retrospective study was conducted in patients who received transplants between January 2016 and December 2021. Early bacteremia was defined as blood stream infection occurring between Day 0 and Day 100 after transplantation. RESULTS Forty episodes of early bacteremia occurred in 36/245 transplanted patients. Fifteen episodes (37.5%) were due to gram-positive bacteria and 25 (62.5%) to gram-negative bacteria. The most frequent species isolated were coagulase negative staphylococci (CoNS) in gram-positive bacteremia (n = 8/15), and Klebsiella species (8/25) and Pseudomonas species (8/25) in gram-negative bacteremia. Twenty-nine episodes of bacteremia (72.5%) occurred during the first 30 days after transplantation with a median time of nine days (range: 0-90 days). Coagulase negative staphylococci were methicillin-resistant in 75% of cases, the only Staphylococcus aureus isolated was methicillin-resistant. All gram-positive bacilli were penicillin-resistant. Gram-negative bacilli were multidrug resistant in 61.5% of cases. In multivariate analysis, bone marrow as source of graft (p-value = 0.02) and cytomegalovirus reactivation (p-value = 0.02) were significantly associated with an increased risk of bacteremia. Mortality attributable to bacteremia was 2.8%. The one-year overall survival was not significantly different between those with and without bacteremia. CONCLUSIONS Bacteremia was more frequent within the first 30 days after transplantation indicating the crucial role of neutropenia. An increase in multidrug resistant gram-negative bacteremia was noted.
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Affiliation(s)
- Nour Ben Abdeljelil
- Centre National de Greffe de Moelle Osseuse de Tunis. Service d'Hématologie et de Greffe, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Rihab Ouerghi
- Centre National de Greffe de Moelle Osseuse de Tunis. Service d'Hématologie et de Greffe, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia.
| | - Insaf Ben Yaiche
- Centre National de Greffe de Moelle Osseuse de Tunis. Service d'Hématologie et de Greffe, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Amine Ben Moussa
- Centre National de Greffe de Moelle Osseuse de Tunis. Service d'Hématologie et de Greffe, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia
| | - Yosra Chebbi
- Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia; Centre National de Greffe de Moelle Osseuse de Tunis. Service des Laboratoires, Tunis, Tunisia
| | - Tarek Ben Othman
- Centre National de Greffe de Moelle Osseuse de Tunis. Service d'Hématologie et de Greffe, Tunis, Tunisia; Université de Tunis El Manar, Faculté de Médecine de Tunis, Tunis, Tunisia
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Sajiki D, Muramatsu H, Wakamatsu M, Yamashita D, Maemura R, Tsumura Y, Imaya M, Yamamori A, Narita K, Kataoka S, Taniguchi R, Narita A, Nishio N, Takahashi Y. Risk factors of bloodstream infection after allogeneic hematopoietic cell transplantation in children/adolescent and young adults. PLoS One 2024; 19:e0308395. [PMID: 39110739 PMCID: PMC11305574 DOI: 10.1371/journal.pone.0308395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Accepted: 07/24/2024] [Indexed: 08/10/2024] Open
Abstract
Allogeneic hematopoietic cell transplantation (HCT) is a crucial treatment for various diseases, including hematological malignancies, solid tumors, and genetic disorders. Despite its curative potential, HCT is associated with severe complications, notably infections, graft-versus-host disease, and organ damage. Infections, particularly bloodstream infections (BSIs), pose a significant threat in the initial weeks post-HCT, necessitating effective management strategies. This retrospective study aimed to clarify the incidence, pathogens, and risk factors associated with BSI within the first 30 days after allogeneic HCT in children/adolescents and young adults (AYAs). The study included 115 patients aged <31 years who underwent 121 allogeneic HCTs at the Department of Pediatrics, Nagoya University Hospital between January 1, 2018, and March 31, 2022. Data encompassed demographic characteristics, HCT details, and BSI information. Overall, 27 of 121 patients developed BSI with the cumulative incidence of 23.5% (95% confidence intervals [CI]: 17.0%-30.6%) at 30 days after HCT. The median onset time of BSI was 7 (range, 4-26 days) after HCT. Gram-positive bacteria accounted for 89% of pathogens isolated from blood cultures, with Streptococcus mitis/oralis being the most common. In multivariable analysis, tandem HCT (subdistribution hazard ratio [SHR]: 5.67, 95% CI: 2.74-11.7, p < 0.001) and peripherally inserted central catheters (SHR: 2.96, 95% CI: 1.34-6.55, p = 0.007) were identified as independent risk factors for BSI. In patients receiving tandem HCT, the pathogens isolated from blood cultures were all gram-positive bacteria, with Streptococcus mitis/oralis accounting for up to 67% of the isolated pathogens. Tandem HCT and PICCs were identified as independent risk factors for BSI after allogeneic HCT in children/AYAs. The pathogens were commonly gram-positive, and Streptococcus mitis/oralis is important in patients who received tandem HCT. These data can provide valuable information for future studies to consider effective interventions to reduce the risk of BSI in high-risk patients.
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Affiliation(s)
- Daichi Sajiki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Manabu Wakamatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Daiki Yamashita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Ryo Maemura
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yusuke Tsumura
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Masayuki Imaya
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Ayako Yamamori
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Kotaro Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Shinsuke Kataoka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Rieko Taniguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Atsushi Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Nobuhiro Nishio
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Aichi, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
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Zhang R, Xiong Y, Zhang L, Liu L. Epidemiology, Microbiology, and Risk Factors of Bacterial Bloodstream Infections in Patients After Allogeneic Hematopoietic Stem Cell Transplantation. Infect Drug Resist 2024; 17:1561-1569. [PMID: 38660056 PMCID: PMC11041975 DOI: 10.2147/idr.s451781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
Purpose To investigate the clinical characteristics, etiology, and risk factors of bacterial bloodstream infection (BSI) in allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients. This study also aimed to provide a clinical basis for early identification of high-risk patients and optimization of empirical antimicrobial treatment. Patients and Methods This is a retrospective study of clinical data during agranulocytosis from 331 patients with hematological malignancies who underwent allo-HSCT at our institute between January 2016 and December 2022. The incidence, distribution and drug resistance patterns, and the risk factors of BSI were analyzed. Results Among the 331 HSCT patients, 250 had febrile neutropenia and 45 cases were found to have BSI. The incidence of BSI in patients with agranulocytosis fever was 18% (45/250). A total of 48 pathogens were isolated during BSI episodes, gram-negative bacteria (GNB) accounted for 70.8% (34/48), gram-positive bacteria (GPB) for 29.2% (14/48). Multivariate analysis revealed that ≥grade 2 acute graft-versus-host disease (aGVHD) and previous BSI within 6 months before HSCT were independently associated with an increased occurrence of BSI. Coagulase-negative staphylococci (CoNS) and Escherichia coli were the most commonly isolated GPB and GNB, respectively. A total of 32 GNB were tested for drug susceptibility, the detection rate of carbapenem-resistant Enterobacteriaceae (CRE) was 12.5% (4/32), and extended-spectrum β-lactamase (ESBL) accounted for 56.3% (18/32). Conclusion BSIs are still a common and severe complication after allo-HSCT. In our center, BSIs in allo-HSCT patients are dominated by gram-negative bacteria and the resistance rate to carbapenem drugs is high. Risk factors for BSI during agranulocytosis were previous BSI within 6 months before HSCT and ≥grade 2 aGVHD.
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Affiliation(s)
- Ruonan Zhang
- Department of Hematology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
| | - Yiying Xiong
- Department of Hematology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
| | - Linyi Zhang
- Department of Hematology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
| | - Lin Liu
- Department of Hematology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, People’s Republic of China
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Mareković I, Vujnović T, Radanović J, Herljević Z, Kuliš T, Pavlović M, Mucavac L, Dejanović-Bekić S, Bilić E. Bloodstream Infections in Pediatric Oncology Patients: Bacterial Pathogen Distribution and Antimicrobial Susceptibility at the University Hospital Centre Zagreb, Croatia-A 5-Year Analysis. J Pediatr Hematol Oncol 2024; 46:e156-e163. [PMID: 38237002 DOI: 10.1097/mph.0000000000002809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 12/19/2023] [Indexed: 02/28/2024]
Abstract
The epidemiology of bacterial pathogens causing bloodstream infections (BSIs) in pediatric hematology/oncology patients is changing and resistance to antimicrobial agents is globally spread. We retrospectively assessed demographic, clinical, and microbiologic data of BSIs during a 5-year period at a pediatric hematology/oncology unit from January 1, 2017, to December 31, 2021, at the University Hospital Centre Zagreb, Zagreb, Croatia. In 66 pediatric patients with malignancies, 93 BSI episodes were registered and 97 bacterial isolates were cultured. The Gram-positive versus Gram-negative ratio was 67 (69.1%) versus 30 (30.9%). Coagulase-negative staphylococci (48; 49.6%) were the most frequent isolates, followed by Enterobacterales (17; 17.5%) and Staphylococcus aureus (6; 6.2%). Multidrug resistance isolates included extended spectrum β-lactamase producers (n=3). Resistance rates to piperacillin/tazobactam, cefepime, and meropenem in Gram-negative isolates were 15.4%, 14.3%, and 0.0%, respectively. Gram-positive bacteria are the most common cause of BSI in our patients. Resistance rates to piperacillin/tazobactam and cefepime in Gram-negative isolates make meropenem a better choice for empirical antimicrobial treatment. As national and hospital data may differ, the surveillance of pathogen distribution and antimicrobial susceptibility in pediatric hematology/oncology wards is necessary to adjust empirical treatment accordingly.
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Affiliation(s)
- Ivana Mareković
- Clinical Department of Clinical Microbiology, Infection and Prevention Control, University Hospital Centre Zagreb
- Department of Medical Microbiology and Parasitology, School of Medicine University of Zagreb
| | - Tajana Vujnović
- Department of Clinical Microbiology, Andrija Štampar Teaching Institute of Public Health
| | - Jasna Radanović
- Department of Microbiology, Institute of Public Health Zagreb County
| | - Zoran Herljević
- Clinical Department of Clinical Microbiology, Infection and Prevention Control, University Hospital Centre Zagreb
| | - Tomislav Kuliš
- Department of Urology, University Hospital Centre Zagreb
| | - Maja Pavlović
- Department of Pediatrics, Division of Hematology and Oncology, University Hospital Zagreb
| | - Lucija Mucavac
- Department of Pediatrics, Division of Hematology and Oncology, University Hospital Zagreb
| | - Sara Dejanović-Bekić
- Department of Pediatrics, Division of Hematology and Oncology, University Hospital Zagreb
| | - Ernest Bilić
- Department of Pediatrics, Division of Hematology and Oncology, University Hospital Zagreb
- Department of Pediatrics, School of Medicine University of Zagreb
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Lubwama M, Kateete DP, Katende G, Kigozi E, Orem J, Phipps W, Bwanga F. CTX-M, TEM, and SHV Genes in Escherichia coli, Klebsiella pneumoniae, and Enterobacter spp Isolated from Hematologic Cancer Patients with Bacteremia in Uganda. Infect Drug Resist 2024; 17:641-653. [PMID: 38384499 PMCID: PMC10878986 DOI: 10.2147/idr.s442646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Accepted: 02/08/2024] [Indexed: 02/23/2024] Open
Abstract
Purpose We determined the phenotypic resistance to third-generation cephalosporins, phenotypic extended spectrum beta-lactamase (ESBL) prevalence, and genotypic prevalence of ESBL-encoding genes blaCTX-M, blaTEM, and blaSHV in Enterobacteriaceae isolated from hematologic cancer patients with febrile neutropenia and bacteremia at the Uganda Cancer Institute (UCI). Patients and Methods Blood cultures from hematologic cancer patients with febrile neutropenia were processed in BACTEC 9120. E. coli, K. pneumoniae, and Enterobacter spp. isolates were identified using conventional biochemical methods. Antimicrobial susceptibility tests, phenotypic ESBL characterization, and genotypic characterization of the ESBL-encoding genes blaCTX-M, blaTEM, and blaSHV were determined for pure isolates of E. coli, K. pneumoniae, and Enterobacter spp. Results Two hundred and two patients were included in the study. Median age of patients was 19 years (IQR: 10-30 years). Majority (N=119, 59%) were male patients. Sixty (30%) of the participants had at least one febrile episode due to Enterobacteriaceae. Eighty-three organisms were isolated with E. coli being predominant (45, 54%). Seventy-nine (95%) Enterobacteriaceae were multidrug resistant. The ESBL phenotype was detected in 54/73 (74%) of Enterobacteriaceae that were resistant to third-generation cephalosporins. A higher proportion of Enterobacteriaceae with ESBL-positive phenotype were resistant to piperacillin-tazobactam (p=0.024), gentamicin (p=0.000), ciprofloxacin (p=0.000), and cotrimoxazole (p=0.000) compared to Enterobacteriaceae, which were sensitive to third-generation cephalosporins. The organisms were more susceptible to carbapenems and chloramphenicol than resistant. ESBL-encoding genes (blaCTX-M, blaTEM, and blaSHV) were detected in 55 (75%) of the 73 Enterobacteriaceae that were resistant to third-generation cephalosporins. BlaCTX-M, was the most common ESBL-encoding gene identified with 50 (91%). Conclusion ESBL-producing Enterobacteriaceae are a predominant cause of bacteremia in hematologic cancer patients at UCI. The most common ESBL-encoding gene identified in the ESBL-PE was blaCTX-M. Resistance to imipenem and meropenem was low.
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Affiliation(s)
- Margaret Lubwama
- Department of Medical Microbiology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - David P Kateete
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - George Katende
- Department of Medical Microbiology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | - Edgar Kigozi
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
| | | | - Warren Phipps
- Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
- Allergy and Infectious Diseases Division, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Freddie Bwanga
- Department of Immunology and Molecular Biology, School of Biomedical Sciences, College of Health Sciences, Makerere University, Kampala, Uganda
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Carlesse F, Russo C, Seber A, Castagnola E. Epidemiology of bloodstream infections and the impact of antimicrobial resistance in pediatric hematopoietic cell transplant. Transpl Infect Dis 2024; 26:e14228. [PMID: 38180287 DOI: 10.1111/tid.14228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 01/06/2024]
Abstract
Bloodstream infections (BSI) pose a substantial threat to the well-being and survival of patients undergoing hematopoietic stem cell transplantation (HSCT). Risk factors for these infections vary across the different post-HSCT phases. In the pre-engraftment period, patients are particularly susceptible to infection due to prolonged neutropenia, mucosal damage, and extensive use of central venous line (CVL). In the post-engraftment phase, the emergence of graft versus host diseases further compounds the risk. The epidemiology of these infections has undergone notable changes over the years due to multifactorial reasons, including the evolution of protocols that intensify immunosuppression. In this context, the emergence of multi-drug resistance (MDR) microorganisms can be a challenge due to the elevated risk of mortality in these vulnerable patients. Unfortunately, there is a lack of comprehensive data on this topic, particularly in pediatrics. This article aims to provide a summary of the epidemiology of BSI in the different post-transplant phases and the impact of MDR pathogens. Having knowledge about the local epidemiology of BSI can be instrumental in tailoring targeted therapies, leading to improved survival rates in HSCT recipients.
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Affiliation(s)
- Fabianne Carlesse
- Pediatric Department Federal University of Sao Paulo, UNIFESP, Sao Paulo, Brazil
- Oncology Pediatric Institute, IOP-GRAACC-UNIFESP, Sao Paulo, Brazil
| | - Chiara Russo
- Department of Health Sciences (DISSAL), Division of Infectious Diseases, University of Genoa, Genoa, Italy
| | - Adriana Seber
- Oncology Pediatric Institute, IOP-GRAACC-UNIFESP, Sao Paulo, Brazil
- Samaritano Hospital, Higienópolis-UHG, Sao Paulo, Brazil
| | - Elio Castagnola
- Pediatric Infectious Diseases Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
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Yang M, Xin L, Li H, Lu X, Pan X, Lei S, Li Y, Zhu L, Zhu Q, Jiang R, Jia Z, Cheng G, Zeng L, Zhang L. Risk factors for bloodstream infection in paediatric haematopoietic stem cell transplantation: a systematic review and meta-analysis. J Hosp Infect 2023; 139:11-22. [PMID: 37308062 DOI: 10.1016/j.jhin.2023.06.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 06/01/2023] [Accepted: 06/02/2023] [Indexed: 06/14/2023]
Abstract
BACKGROUND Haematopoietic stem cell transplantation (HSCT), a standard treatment for paediatric haematological diseases, is highly associated with bloodstream infection (BSI), which may increase mortality. AIM To explore the risk factors for BSI in paediatric HSCT recipients. METHODS Three English databases and four Chinese databases were searched from inception to March 17th, 2022. Eligible studies included randomized controlled trials, cohort studies, and case-control studies that enrolled HSCT recipients aged ≤18 years and reported BSI risk factors. Two reviewers independently screened studies, extracted data, and assessed the risk of bias. Using the Grading of Recommendations Assessment, Development, and Evaluation (GRADE), certainty of body of evidence was assessed. FINDINGS Fourteen studies involving 4602 persons were included. The incidences of BSI and associated mortality in paediatric HSCT recipients were approximately 10-50% and 5-15%, respectively. Meta-analysis of all studies revealed that previous BSI before HSCT (relative effect (RE): 2.28; 95% confidence interval (CI) 1.19-4.34, moderate certainty) and receiving an umbilical cord blood transplant (RE: 1.55; 95% CI: 1.22-1.97, moderate certainty) were probably associated with an increased risk of BSI. Meta-analysis of studies with low risk of bias reassured that previous BSI before HSCT probably increased the risk of BSI (RE: 2.28; 95% CI: 1.19-4.34, moderate certainty), and revealed that steroid use (RE: 2.72; 95% CI: 1.31-5.64, moderate certainty) was likely a risk factor whereas autologous HSCT was probably a protective factor of BSI (RE: 0.65; 95% CI: 0.45-0.94, moderate certainty). CONCLUSION These findings could inform the management of paediatric HSCT recipients, helping identify who may benefit from prophylactic antibiotics.
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Affiliation(s)
- M Yang
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China; West China School of Medicine, Sichuan University, Chengdu 610000, China
| | - L Xin
- Department of Clinical Pharmacy, Affiliated Hospital of Yunnan University, Kunming 650000, China
| | - H Li
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
| | - X Lu
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China; Department of Paediatric Haematology and Oncology, West China Second Hospital, Sichuan University, Chengdu 610000, China
| | - X Pan
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China
| | - S Lei
- West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - Y Li
- West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - L Zhu
- West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - Q Zhu
- West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - R Jiang
- West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - Z Jia
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China; West China School of Pharmacy, Sichuan University, Chengdu 610000, China
| | - G Cheng
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China; Department of Paediatrics, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Laboratory of Molecular Translational Medicine, Centre for Translational Medicine, Sichuan University, Chengdu 610000, China
| | - L Zeng
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China.
| | - L Zhang
- Department of Pharmacy, West China Second University Hospital, Sichuan University, Chengdu 610000, China; Evidence-Based Pharmacy Centre, West China Second University Hospital, Sichuan University, Chengdu 610000, China; NMPA Key Laboratory for Technical Research on Drug Products In Vitro and In Vivo Correlation, Chengdu 610000, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu 610000, China; Chinese Evidence-based Medicine Centre, West China Hospital, Sichuan University, Chengdu 610000, China.
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Al Dabbagh M, Alghounaim M, Almaghrabi RH, Dbaibo G, Ghatasheh G, Ibrahim HM, Aziz MA, Hassanien A, Mohamed N. A Narrative Review of Healthcare-Associated Gram-Negative Infections Among Pediatric Patients in Middle Eastern Countries. Infect Dis Ther 2023; 12:1217-1235. [PMID: 37071349 DOI: 10.1007/s40121-023-00799-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/28/2023] [Indexed: 04/19/2023] Open
Abstract
INTRODUCTION Gram-negative bacteria (GNB) have become prominent across healthcare and community settings due to factors including lack of effective infection control and prevention (ICP) and antimicrobial stewardship programs (ASPs), GNB developing antimicrobial resistance (AMR), and difficulty treating infections. This review summarizes available literature on healthcare-associated infections (HAIs) in Middle Eastern pediatric patients. METHODS Literature searches were performed with PubMed and Embase databases. Articles not reporting data on GNB, HAIs, pediatric patients, and countries of interest were excluded. RESULTS The searches resulted in 220 publications, of which 49 met the inclusion criteria and 1 additional study was identified manually. Among 19 studies across Egypt reporting GNB prevalence among pediatric patients, Klebsiella species/K. pneumoniae and Escherichia coli were typically the most common GNB infections; among studies reporting carbapenem resistance and multidrug resistance (MDR), rates reached 86% and 100%, respectively. Similarly, in Saudi Arabia, Klebsiella spp./K. pneumoniae and E. coli were the GNB most consistently associated with infections, and carbapenem resistance (up to 100%) and MDR (up to 75%) were frequently observed. In other Gulf Cooperation Council countries, including Kuwait, Oman, and Qatar, carbapenem resistance and MDR were also commonly reported. In Jordan and Lebanon, E. coli and Klebsiella spp./K. pneumoniae were the most common GNB isolates, and AMR rates reached 100%. DISCUSSION This review indicated the prevalence of GNB-causing HAIs among pediatric patients in Middle Eastern countries, with studies varying in reporting GNB and AMR. Most publications reported antimicrobial susceptibility of isolated GNB strains, with high prevalence of extended-spectrum beta-lactamase-producing K. pneumoniae and E. coli isolates. A review of ASPs highlighted the lack of data available in the region. CONCLUSIONS Enhanced implementation of ICP, ASPs, and AMR surveillance is necessary to better understand the widespread burden of antimicrobial-resistant GNB and to better manage GNB-associated HAIs across Middle Eastern countries.
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Affiliation(s)
- Mona Al Dabbagh
- King Abdulaziz Medical City, Jeddah, Saudi Arabia
- King Abdullah International Medical Research Center, Jeddah, Saudi Arabia
- King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
| | | | | | - Ghassan Dbaibo
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon.
| | | | - Hanan M Ibrahim
- Pediatric Department, Children's Hospital, Ain Shams University Hospital, Cairo, Egypt
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Niyazi D, Micheva I, Dokova K, Stoeva T. Incidence, Risk Factors and Outcome of Bloodstream Infections in Patients After Hematopoietic Stem-Cell Transplantation: A Single Center Study. Indian J Hematol Blood Transfus 2023; 39:1-5. [PMID: 37362402 PMCID: PMC10066969 DOI: 10.1007/s12288-023-01645-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 03/16/2023] [Indexed: 04/05/2023] Open
Abstract
The bloodstream infections (BSIs) are among the most common infectious complications after hematopoietic stem-cell transplantation (HSCT), often associated with high mortality rates. The aim of this study was to evaluate the incidence, risk factors and outcome of BSIs in HSCT recipients from the Transplantation Center of the University Hospital in Varna, Bulgaria during the period January 2019-December 2021. The role of patient- and transplantation-related variables was studied as potential risk factors for BSIs and survival after HSCT. Seventy-four patients were included in the study. The cumulative incidence of BSIs was 35%. The mean period of BSI onset after HSCT was 8 days. The Gram-positive bacteria were more commonly isolated as causative agents (52.3%). The mortality rate 30 days after the diagnosis of BSI was 23%. Fecal colonization with multidrug-resistant (MDR) bacteria (p = 0.005) and pre-transplant BSI (p = 0.05) were associated with significantly increased risk for post-HSCT BSIs. The overall 4-month survival was 86.5%. A statistical significance was found between the type of the underlying disease (acute leukemia and lymphoma, p = 0.043), previous HSCT (p = 0.001) and 4-month survival. This study confirms that the fecal colonization with MDR bacteria before transplantation and pre-transplant BSIs are independent risk factors for the occurrence of BSI in the early period after HSCT. Pre- and posttransplant monitoring of the patient fecal colonization status with MDR organisms, could contribute considerably to the prevention and successful management of the infectious complications in patients after HSCT.
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Affiliation(s)
- Denis Niyazi
- Laboratory of Clinical Microbiology, University Hospital “St. Marina”, Varna, Bulgaria
- Medical University – Varna, Varna, Bulgaria
| | - Ilina Micheva
- Clinical Hematology Clinic, University Hospital “St. Marina”, Varna, Bulgaria
- Medical University – Varna, Varna, Bulgaria
| | - Klara Dokova
- Department of Social Medicine and Healthcare Organization, Medical University – Varna, Varna, Bulgaria
| | - Temenuga Stoeva
- Laboratory of Clinical Microbiology, University Hospital “St. Marina”, Varna, Bulgaria
- Medical University – Varna, Varna, Bulgaria
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Cao W, Zhang J, Bian Z, Li L, Zhang S, Qin Y, Wan D, Jiang Z, Zhang R. Active Screening of Intestinal Colonization of Carbapenem-Resistant Enterobacteriaceae for Subsequent Bloodstream Infection in Allogeneic Hematopoietic Stem Cell Transplantation. Infect Drug Resist 2022; 15:5993-6006. [PMID: 36262593 PMCID: PMC9576326 DOI: 10.2147/idr.s387615] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 10/12/2022] [Indexed: 11/05/2022] Open
Abstract
Purpose To investigate the prevalence, risk factors of intestinal carbapenem-resistant Enterobacteriaceae (CRE) colonization and bloodstream infection (BSI) caused by CRE in allogeneic hematopoietic stem cell transplantation (allo-HSCT) recipients. Methods We analyzed the clinical data of 185 patients with hematological malignancies who underwent allo-HSCT from May 2019 to December 2021. All patients received regular CRE monitoring by rectal swab during allo-HSCT, and some CRE strains were further identified for carbapenemase phenotypes. The rates, distribution and risk factors of CRE colonization, CRE-induced BSI were analyzed. Results CRE was detected in 44 of 185 recipients, with colonization rate of 23.8%. A total of 46 strains of CRE were isolated, including 22 Escherichia coli, 17 Klebsiella pneumoniae, three Klebsiella oxytoca, two Enterobacter hormaechei, and two other Enterobacteriaceae. Among the 19 strains identified with carbapenemase phenotypes, eight strains of E. coli produced metal β-lactamase, five K. pneumoniae produced serine carbapenemase, two K. pneumoniae produced metal β-lactamase, two K. oxytoca produced metal β-lactamase, a Citrobacter malonic acid-free produced metal β-lactamase and a Citrobacter freundii produced metal β-lactamase. In 10 patients developed with CRE-related BSI, the types and combined drug sensitivity of strains detected by rectal swab were highly consistent with blood culture. Multivariate analysis revealed that pulmonary infection, perianal infection and carbapenem application in the 3 months pre-transplant were independent risk factors for rectal CRE colonization, while rectal colonization with carbapenem-resistant K. pneumoniae (CR-KP) was an independent risk factor for CRE-induced BSI. The mortality rate within 30 days of CRE-related BSI was 50.0%, and patients receiving multi-drug therapy within 24 hours showed slightly lower mortality than that in the single-drug treatment group. Conclusion Allo-HSCT patients with CRE-induced BSI have poor prognosis, and CR-KP rectal colonization is an independent risk factor for CRE-related BSI. Rectal swab screening during allo-HSCT could provide early warning for later CRE-induced BSI.
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Affiliation(s)
- Weijie Cao
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Jieyong Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Zhilei Bian
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Li Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Suping Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Yang Qin
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Dingming Wan
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Zhongxing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China
| | - Ran Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People’s Republic of China,Correspondence: Ran Zhang; Zhongxing Jiang, Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450002, People’s Republic of China, Tel +86 137 8359 0246; +86 185 3805 3607, Fax +86 370 66295122, Email ;
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11
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Amer R, Salameh H, Mosleh S, Abu-Taha A, Hamayel H, Enaya A, Adas A, Khursani A, Wild-Ali M, Mousa T, Battat M, Daifallah A, Koni A, Shawahna R. Epidemiology of early infections and predictors of mortality after autologous hematopoietic stem-cell transplantation among multiple myeloma, Hodgkin, and non-Hodgkin lymphoma: the first experience from Palestine. BMC Infect Dis 2022; 22:725. [PMID: 36071381 PMCID: PMC9449926 DOI: 10.1186/s12879-022-07709-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 08/26/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Autologous hematopoietic stem-cell transplantation (HSCT) is the standard of care in many relapsed and refractory lymphoid malignancy, neuroblastoma, and multiple myeloma (MM). This study was conducted to describe the epidemiology of early infections that occurred within the first 100 days among patients who received HSCT for MM, Hodgkin (HL), and non-Hodgkin lymphoma (NHL) in Palestine. METHODS This study was conducted in a retrospective cohort design in the only autologous HSCT in Palestine in the period between 2014 and 2021. The medical records of the patients were reviewed to identify and collect demographic, clinical, and microbiological data on bacterial, viral, fungal, and parasitic infections as diagnosed by cultures, polymerase chain reaction, and fluorescent antibody testing. RESULTS A total of 145 patients were included in this study (median age = 44.0 [28.0, 53.5] years). Of those, 8 (5.5%) were younger than 18 years, 69 (47.6%) had MM, 53 (36.6%) had HL, and 23 (15.9%) had NHL. The source of fever had no focus in the majority of the cases 82 (56.6%), 12 (8.3%) had bloodstream infections, 8 (5.5%) had colitis, and 7.6 (5.0%) had pneumonia. Patients from whom gram-negative bacteria were isolated stayed in the hospital for longer duration compared to the other patients (median = 21.0 [19.0, 25.0] vs. 18.0 [15.0, 22.0] days, p-value = 0.043, respectively). The cumulative incidence of death in the first 100 days after infusion of stem cells was 3.4%. The cumulative incidence of death in the first 100 days post-transplantation was higher for patients with NHL compared to those with HL and MM (p-value = 0.017). Gram-negative and fungal infections were strong predictors of mortality. CONCLUSION Bacterial gram-positive and gram-negative infections were the most common early infections among patients who underwent autologous HSCT for hematological malignancies (HM) in the only center in Palestine. The findings of this study are informative to healthcare providers and planners of care for patients who are scheduled to receive autologous HSCT for HM.
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Affiliation(s)
- Riad Amer
- Department of Medicine, An-Najah National University Hospital, P.O. Box 7, Nablus, Palestine.
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine.
| | - Husam Salameh
- Department of Medicine, An-Najah National University Hospital, P.O. Box 7, Nablus, Palestine.
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine.
| | - Sultan Mosleh
- Department of Medicine, An-Najah National University Hospital, P.O. Box 7, Nablus, Palestine
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine
| | - Adham Abu-Taha
- Department of Physiology, Pharmacology and Toxicology, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
| | - Hamza Hamayel
- Internal Medicine, An-Najah National University Hospital, Nablus, Palestine
| | - Ahmad Enaya
- Internal Medicine, An-Najah National University Hospital, Nablus, Palestine
| | - Amro Adas
- Internal Medicine, An-Najah National University Hospital, Nablus, Palestine
| | - Ahmad Khursani
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine
| | - Mohamad Wild-Ali
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine
| | - Taghreed Mousa
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine
| | - Maher Battat
- Hematology and Oncology, An-Najah National University Hospital, Nablus, Palestine
| | - Aiman Daifallah
- Internal Medicine, An-Najah National University Hospital, Nablus, Palestine
| | - Amer Koni
- Internal Medicine, An-Najah National University Hospital, Nablus, Palestine
| | - Ramzi Shawahna
- Department of Physiology, Pharmacology and Toxicology, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine
- An-Najah BioSciences Unit, Centre for Poisons Control, Chemical and Biological Analyses, An-Najah National University, Nablus, Palestine
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12
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Satlin MJ, Weissman SJ, Carpenter PA, Seo SK, Shelburne SA. American Society of Transplantation and Cellular Therapy Series, 1: Enterobacterales Infection Prevention and Management after Hematopoietic Cell Transplantation. Transplant Cell Ther 2021; 27:108-114. [PMID: 33781545 DOI: 10.1016/j.jtct.2020.10.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/15/2022]
Abstract
The Practice Guidelines Committee of the American Society of Transplantation and Cellular Therapy partnered with its Transplant Infectious Disease Special Interest Group to update its 2009 compendium-style infectious diseases guidelines for hematopoietic cell transplantation (HCT). A completely fresh approach was taken, with the goal of better serving clinical providers by publishing each stand-alone topic in the infectious diseases series in a concise format of frequently asked questions (FAQs), tables, and figures [1]. Adult and pediatric infectious diseases and HCT content experts developed and then answered FAQs, and then finalized topics with harmonized recommendations that were made by assigning a strength of recommendation ranging from A to E paired with a level of supporting evidence graded I to III. The first topic in the series focuses on potentially life-threatening infections in HCT caused by Enterobacterales, relevant infection risk factors, and practical considerations regarding prevention and treatment of these infections in the setting of emerging multidrug resistance.
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Affiliation(s)
- Michael J Satlin
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, New York.
| | - Scott J Weissman
- Division of Infectious Diseases, Seattle Children's Hospital, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington
| | - Paul A Carpenter
- Division of Infectious Diseases, Seattle Children's Hospital, Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington; Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington
| | - Susan K Seo
- Infectious Diseases Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Samuel A Shelburne
- Department of Infectious Diseases, MD Anderson Cancer Center, Houston, Texas
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13
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Cao W, Guan L, Li X, Zhang R, Li L, Zhang S, Wang C, Xie X, Jiang Z, Wan D, Chi X. Clinical Analysis of Bloodstream Infections During Agranulocytosis After Allogeneic Hematopoietic Stem Cell Transplantation. Infect Drug Resist 2021; 14:185-192. [PMID: 33500639 PMCID: PMC7826046 DOI: 10.2147/idr.s280869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 01/01/2021] [Indexed: 12/30/2022] Open
Abstract
Purpose To explore the epidemiological characteristics and risk factors of bloodstream infections (BSI) in patients who develop agranulocytosis fever after allogeneic hematopoietic stem cell transplantation (allo-HSCT). This study also provides a basis for the clinical treatment of BSI. Methods A retrospective analysis of 397 allo-HSCT patients in the Department of Hematology of our hospital was conducted from January 2013 to December 2017 to analyze the incidence of BSI, the distribution and types of pathogenic bacteria, and drug resistance rates. We also determined whether various parameters are risk factors to BSI, including the patient age, gender, disease type, transplantation method, stem cell source, pre-treatment with anti-thymocyte globulin (ATG), and agranulocytosis time. Results Among the 397 allo-HSCT patients, 294 had a fever during the period of agranulocytosis, and 52 cases were found to have BSI. The incidence of BSI in patients with agranulocytosis fever was 17.7% (52/294). Among the 60 pathogens detected, 43 (71.67%), 10 (16.67%), and 7 (11.67%) were Gram negative strains, Gram positive strains, and fungi, respectively. The most common bacteria were Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa. The detection rate of extended-spectrum β-lactamase (ESBL) was 40.0%, and carbapenem-resistant Enterobacteriaceae (CRE) accounted for 17.9%. Single-factor and multi-factor analyses showed that pre-treatment with ATG, agranulocytosis time (≥21 days), and stem cell source were risk factors for BSI. Conclusion We found that in our hospital, BSIs in allo-HSCT patients are mainly caused by Gram-negative bacteria, and the resistance rate to carbapenem drugs is high. Pre-treatment with ATG, agranulocytosis time (≥21 days), and stem cell source are risk factors for BSI.
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Affiliation(s)
- Weijie Cao
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Lina Guan
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Xiaoning Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Ran Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Li Li
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Suping Zhang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Chong Wang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Xinsheng Xie
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Zhongxing Jiang
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Dingming Wan
- Department of Hematology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, People's Republic of China
| | - Xiaohui Chi
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, People's Republic of China
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