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Tan XT, Mokhtar NNB, Hii S, Amran F. Antifungal Susceptibility and Genotypic Analysis of cyp51A Mutations in Aspergillus fumigatus Isolates in Malaysia. Infect Drug Resist 2024; 17:2159-2168. [PMID: 38828376 PMCID: PMC11144424 DOI: 10.2147/idr.s452619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/09/2024] [Indexed: 06/05/2024] Open
Abstract
Purpose Azole resistance in Aspergillus fumigatus poses a significant challenge in the management of invasive aspergillosis. This study aimed to investigate the antifungal susceptibility and cyp51A mutation profiles of A. fumigatus isolates in Malaysia. Patients and Methods Sixty clinical A. fumigatus isolates were collected and subjected to antifungal susceptibility testing (AFST) and molecular analysis. The antifungal susceptibility testing was performed according to CLSI M38 guideline. The geometric mean (GM) minimum inhibitory concentration (MIC), MIC50/MIC90 for voriconazole, itraconazole, posaconazole, amphotericin B, and isavuconazole against A. fumigatus in non-invasive cases and invasive cases were calculated. In addition, the presence of cyp51A mutations was also identified. Results The present study revealed an overall resistance rate of 6.7% among the isolates. In non-invasive cases, isavuconazole and posaconazole demonstrated the lowest GM MIC of 0.08 µg/mL. Following them were itraconazole, voriconazole, and amphotericin B with concentrations of 0.15µg/mL, 0.16µg/mL and 0.90µg/mL, respectively. Similarly, in invasive cases, isavuconazole and posaconazole exhibited the lowest GM MIC of 0.09µg/mL. Following them were itraconazole, voriconazole, and amphotericin B with concentrations of 0.14µg/mL, 0.17µg/mL and 0.80µg/mL, respectively. Genotypic analysis revealed various cyp51A mutations, including F46Y, M172V, N248K, R34L, V244A, V244S, and E427K. However, not all mutations corresponded to antifungal resistance. Conclusion The majority of clinical Aspergillus fumigatus isolates demonstrated susceptibility to the antifungal agents tested, with isavuconazole and posaconazole demonstrating the lowest MIC values. However, cyp51A mutations were discovered without a consistent correlation to antifungal resistance, emphasising the need for additional research.
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Affiliation(s)
- Xue Ting Tan
- Bacteriology Unit, Infectious Diseases Research Centre, Institute for Medical Research, National Institute of Health, Ministry of Health Malaysia, Setia Alam, Selangor, Malaysia
| | - Nurin Nazirah Binti Mokhtar
- Bacteriology Unit, Infectious Diseases Research Centre, Institute for Medical Research, National Institute of Health, Ministry of Health Malaysia, Setia Alam, Selangor, Malaysia
| | - Shirley Yi Fen Hii
- Bacteriology Unit, Infectious Diseases Research Centre, Institute for Medical Research, National Institute of Health, Ministry of Health Malaysia, Setia Alam, Selangor, Malaysia
| | - Fairuz Amran
- Bacteriology Unit, Infectious Diseases Research Centre, Institute for Medical Research, National Institute of Health, Ministry of Health Malaysia, Setia Alam, Selangor, Malaysia
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2
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Whitehurst DA, Friedman DL, Zhao Z, Sarma A, Snyder E, Dulek DE, Banerjee R, Kitko CL, Esbenshade AJ. A comprehensive assessment of the prolonged febrile neutropenia evaluation in pediatric oncology patients. Pediatr Blood Cancer 2024; 71:e30818. [PMID: 38110594 DOI: 10.1002/pbc.30818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/14/2023] [Accepted: 12/01/2023] [Indexed: 12/20/2023]
Abstract
BACKGROUND Pediatric oncology patients with prolonged (≥96 hours) febrile neutropenia (absolute neutrophil count < 500/μL) often undergo an evaluation for invasive fungal disease (IFD) and other infections. Current literature suggests that beta-D-glucan (BDG), galactomannan, bronchoalveolar lavage (BAL), and computed tomography (CT) scans (sinus, chest, and abdomen/pelvis) may help determine a diagnosis in this population. METHODS In a retrospective cohort study of all cancer/stem cell transplant patients (diagnosed 2005-2019) from one pediatric hospital, all episodes with prolonged febrile neutropenia or IFD evaluations (defined as sending a fungal biomarker or performing a CT scan to assess for infection) were identified. RESULTS In total, 503 episodes met inclusion criteria and 64% underwent IFD evaluations. In total, 36.4% of episodes documented an infection after initiation of prolonged febrile evaluation, most commonly Clostridioides difficile colitis (6.4%) followed by a true bacterial bloodstream infection (BSI) (5.2%), proven/probable IFD (4.8%), and positive respiratory pathogen panel (3.6%). There was no difference in sinus CTs showing sinusitis (74% vs 63%, p = 0.46), whereas 32% of abdomen/pelvis CTs led to a non-IFD diagnosis, and 25% of chest CTs showed possible pneumonia. On chest CT, the positive predictive value (PPV) for IFD was 19% for nodules and 14% for tree and bud lesions. BDG had a PPV of 25% for IFD and GM 50%. BAL diagnosed IFD once and pneumocystis jirovecii pneumonia twice. CONCLUSIONS Chest CTs and abdomen/pelvis CTs provide clinically relevant information during the prolonged febrile neutropenia evaluation, whereas BDG, galactomannan, BAL, and sinus CTs have less certain utility.
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Affiliation(s)
| | - Debra L Friedman
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Pediatric Hematology-Oncology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Zhiguo Zhao
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Asha Sarma
- Department of Radiology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Elizabeth Snyder
- Department of Radiology, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Daniel E Dulek
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
- Division of Pediatric Infectious Diseases, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Ritu Banerjee
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
- Division of Pediatric Infectious Diseases, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Carrie L Kitko
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Pediatric Hematology-Oncology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
| | - Adam J Esbenshade
- School of Medicine, Vanderbilt University, Nashville, Tennessee, USA
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Division of Pediatric Hematology-Oncology, Monroe Carell Jr. Children's Hospital at Vanderbilt, Nashville, Tennessee, USA
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3
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Patel SN, Thompson D, Roth N, Grodstein E. Cutaneous and renal aspergillosis resulting from orthotopic liver transplantation. BMJ Case Rep 2023; 16:e256974. [PMID: 37993141 PMCID: PMC10668145 DOI: 10.1136/bcr-2023-256974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2023] Open
Affiliation(s)
- Shreeja Nirav Patel
- Medical School, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
| | - Dane Thompson
- Department of Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
| | - Nitzan Roth
- Department of Hepatology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
| | - Elliot Grodstein
- Department of Transplant Surgery, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead, New York, USA
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Yeoh DK, McMullan BJ, Clark JE, Slavin MA, Haeusler GM, Blyth CC. The Challenge of Diagnosing Invasive Pulmonary Aspergillosis in Children: A Review of Existing and Emerging Tools. Mycopathologia 2023; 188:731-743. [PMID: 37040020 PMCID: PMC10564821 DOI: 10.1007/s11046-023-00714-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/07/2023] [Indexed: 04/12/2023]
Abstract
Invasive pulmonary aspergillosis remains a major cause of morbidity and mortality for immunocompromised children, particularly for patients with acute leukaemia and those undergoing haematopoietic stem cell transplantation. Timely diagnosis, using a combination of computed tomography (CT) imaging and microbiological testing, is key to improve prognosis, yet there are inherent challenges in this process. For CT imaging, changes in children are generally less specific than those reported in adults and recent data are limited. Respiratory sampling by either bronchoalveolar lavage or lung biopsy is recommended but is not always feasible in children, and serum biomarkers, including galactomannan, have important limitations. In this review we summarise the current paediatric data on available diagnostic tests for IPA and highlight key emerging diagnostic modalities with potential for future use.
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Affiliation(s)
- Daniel K Yeoh
- Department of Infectious Diseases, Perth Children's Hospital, 15 Hospital Avenue, Perth, WA, 6009, Australia.
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia.
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia.
- Murdoch Children's Research Institute, Parkville, VIC, Australia.
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia.
| | - Brendan J McMullan
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- Department of Immunology and Infectious Diseases, Sydney Children's Hospital, Randwick, NSW, Australia
- School of Women's and Children's Health, UNSW, Sydney, NSW, Australia
| | - Julia E Clark
- Infection Management Service, Queensland Children's Hospital, Brisbane, QLD, Australia
- School of Clinical Medicine, Children's Health Queensland Clinical Unit, The University of Queensland, Brisbane, QLD, Australia
| | - Monica A Slavin
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Gabrielle M Haeusler
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Parkville, VIC, Australia
- National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Murdoch Children's Research Institute, Parkville, VIC, Australia
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
- Department of Infectious Diseases, Royal Children's Hospital, Parkville, VIC, Australia
- The Paediatric Integrated Cancer Service, Melbourne, VIC, Australia
| | - Christopher C Blyth
- Department of Infectious Diseases, Perth Children's Hospital, 15 Hospital Avenue, Perth, WA, 6009, Australia
- Wesfarmers Centre of Vaccines and Infectious Diseases, Telethon Kids Institute, University of Western Australia, Perth, WA, Australia
- Department of Microbiology, PathWest Laboratory Medicine WA, Nedlands, WA, Australia
- School of Medicine, University of Western Australia, Perth, WA, Australia
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5
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Farahani A, Ghiasvand F, Davoudi S, Ahmadinejad Z. Invasive aspergillosis in liver transplant recipients, an infectious complication with low incidence but significant mortality. World J Transplant 2023; 13:264-275. [PMID: 37746042 PMCID: PMC10514749 DOI: 10.5500/wjt.v13.i5.264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/17/2023] [Accepted: 09/04/2023] [Indexed: 09/15/2023] Open
Abstract
BACKGROUND Infections, including invasive fungal infections (IFIs), are among the leading causes of mortality in liver transplant recipients during the first year post-transplantation. AIM To investigate the epidemiology, clinical manifestations, risk factors, treatment outcomes, and mortality rate of post-liver transplantation invasive aspergillosis (IA). METHODS In this case-control study, 22 patients with IA were identified by reviewing the archived and electronic medical records of 850 patients who received liver transplants at the Imam Khomeini Hospital complex in Tehran, Iran, between 2014 and 2019. The control group comprised 38 patients without IA infection matched for age and sex. The information obtained included the baseline characteristics of liver transplant patients, operative reports, post-transplantation characteristics of both groups and information about the fungal infection of the patient group. RESULTS The prevalence rate of IA among liver transplant recipients at Imam Khomeini Hospital was 2.7%. The risk factors of IA among studied patients included high serum creatinine levels before and post-transplant, renal replacement therapy, antithymocyte globulin induction therapy, post-transplant bile leakage, post-transplant hepatic artery thrombosis, repeated surgery within 30 d after the transplant, bacterial pneumonia before the aspergillosis diagnosis, receiving systemic antibiotics before the aspergillus infection, cytomegalovirus infection, and duration of post-transplant hospitalization in the intensive care unit. The most prevalent form of infection was invasive pulmonary aspergillosis, and the most common chest computed tomography scan findings were nodules, pleural effusion, and the halo sign. In the case group, prophylactic antifungal therapy was administered more frequently than in the control group. The antifungal therapy response rate at 12 wk was 63.7%. The 3- and 12- mo mortality rates of the patients with IA were 36.4% and 45.4%, respectively (compared with the mortality rate of the control group in 12 mo, which was zero). CONCLUSION In this study, the prevalence of IA among liver transplant recipients was relatively low. However, it was one of the leading causes of mortality following liver transplantation. Targeted antifungal therapy may be a factor in the low incidence of infections at our facility. Identifying the risk factors of IFIs, maintaining an elevated level of clinical suspicion, and initiating early antifungal treatment may significantly improve the prognosis and reduce the mortality rate of liver transplant recipients.
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Affiliation(s)
- Azam Farahani
- Department of Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran 1478714466, Iran
| | - Fereshteh Ghiasvand
- Department of Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran 1478714466, Iran
| | - Setareh Davoudi
- Department of Infectious Diseases, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran 1478714466, Iran
| | - Zahra Ahmadinejad
- Liver Transplantation Research Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran 1478714466, Iran
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Arrieta AC, Lee A, Tran MT. Invasive Mold Infections in Children: Navigating Troubled Waters with a Broken Compass. Infect Dis Ther 2023:10.1007/s40121-023-00819-9. [PMID: 37209297 DOI: 10.1007/s40121-023-00819-9] [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: 02/22/2023] [Accepted: 05/03/2023] [Indexed: 05/22/2023] Open
Abstract
Incidence of invasive mold infections in children, while rare, is increasing as the population of high-risk patients expands, including premature infants, pediatric patients undergoing treatment for hematological malignancies, or recipients of allogeneic hematologic stem cell transplants. The infectious agents, including Aspergillus spp., Mucorales, and other molds, are especially difficult to treat and have serious morbidity and high mortality. Clinicians must maintain a high index of suspicion for invasive mold infections in at-risk patients. Diagnosis of invasive mold infections is complicated by difficulties isolating pathogens on culture, but progress is being made in immunological and molecular diagnostic technologies. Treatment in children is challenging; no randomized controlled trials exist. There is a growing body of data on treatment, specifically on safer antifungal agents, including indications for treatment, spectrum of coverage, pharmacokinetics for different ages, and pharmacodynamic targets associated with therapeutic success. However, pediatricians must often extrapolate from adult data. In this review, we aim to harmonize the existing body of literature on invasive mold infections in children, covering epidemiology, clinical presentations, diagnostic methods, and principles of management.
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Affiliation(s)
- Antonio C Arrieta
- Department of Infectious Diseases, Children's Hospital of Orange County, Orange, CA, USA
- Department of Pediatrics, University of California, Irvine, School of Medicine, Irvine, CA, USA
| | - Adam Lee
- Department of Infectious Diseases, Children's Hospital of Orange County, Orange, CA, USA.
| | - M Tuan Tran
- Department of Pharmacy, Children's Hospital of Orange County, Orange, CA, USA
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7
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Luptáková D, Patil RH, Dobiáš R, Stevens DA, Pluháček T, Palyzová A, Káňová M, Navrátil M, Vrba Z, Hubáček P, Havlíček V. Siderophore-Based Noninvasive Differentiation of Aspergillus fumigatus Colonization and Invasion in Pulmonary Aspergillosis. Microbiol Spectr 2023; 11:e0406822. [PMID: 36719229 PMCID: PMC10100950 DOI: 10.1128/spectrum.04068-22] [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: 10/06/2022] [Accepted: 01/06/2023] [Indexed: 02/01/2023] Open
Abstract
Germination from conidia to hyphae and hyphal propagation of Aspergillus fumigatus are the key pathogenic steps in the development of invasive pulmonary aspergillosis (IPA). By applying in vitro observations in a clinical study of 13 patients diagnosed with probable IPA, here, we show that the transition from colonization to the A. fumigatus invasive stage is accompanied by the secretion of triacetylfusarinine C (TafC), triacetylfusarinine B (TafB), and ferricrocin (Fc) siderophores into urine, with strikingly better sensitivity performance than serum sampling. The best-performing index, the TafC/creatinine index, with a median value of 17.2, provided 92.3% detection sensitivity (95% confidence interval [CI], 64.0 to 99.8%) and 100% specificity (95% CI, 84.6 to 100%), i.e., substantially better than the corresponding indications provided by galactomannan (GM) and β-d-glucan (BDG) serology. For the same patient cohort, the serum GM and BDG sensitivities were 46.2 and 76.9%, respectively, and their specificities were 86.4 and 63.6%, respectively. The time-dependent specific appearance of siderophores in the host's urine represents an impactful clinical diagnostic advantage in the early discrimination of invasive aspergillosis from colonization. A favorable concentration of TafC in a clinical specimen distant from a deep infection site enables the noninvasive sampling of patients suffering from IPA. IMPORTANCE The importance of this research lies in the demonstration that siderophore analysis can distinguish between asymptomatic colonization and invasive pulmonary aspergillosis. We found clear associations between phases of fungal development, from conidial germination to the proliferative stage of invasive aspergillosis, and changes in secondary metabolite secretion. The critical extracellular fungal metabolites triacetylfusarinines C and B are produced during the polarized germination or postpolarized growth phase and reflect the morphological status of the proliferating pathogen. False positivity in Aspergillus diagnostics is minimized as mammalian cells do not synthesize Aspergillus siderophore or mycotoxin molecules.
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Affiliation(s)
- Dominika Luptáková
- Institute of Microbiology of the Czech Academy of Sciences, Prague, Czechia
| | - Rutuja H. Patil
- Institute of Microbiology of the Czech Academy of Sciences, Prague, Czechia
- Department of Analytical Chemistry, Palacký University, Olomouc, Czechia
| | - Radim Dobiáš
- Department of Bacteriology and Mycology, Public Health Institute in Ostrava, Ostrava, Czechia
- Institute of Laboratory Medicine, Faculty of Medicine, University of Ostrava, Ostrava, Czechia
| | - David A. Stevens
- California Institute for Medical Research, San Jose, California, USA
- Division of Infectious Diseases and Geographic Medicine, Stanford University School of Medicine, Stanford, California, USA
| | - Tomáš Pluháček
- Institute of Microbiology of the Czech Academy of Sciences, Prague, Czechia
- Department of Analytical Chemistry, Palacký University, Olomouc, Czechia
| | - Andrea Palyzová
- Institute of Microbiology of the Czech Academy of Sciences, Prague, Czechia
| | - Marcela Káňová
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Ostrava, Ostrava, Czechia
- Institute of Physiology and Pathophysiology, Faculty of Medicine, University of Ostrava, Ostrava, Czechia
- Department of Intensive Medicine, Emergency Medicine and Forensic Studies, University of Ostrava, Ostrava, Czechia
| | - Milan Navrátil
- Department of Hematooncology, University Hospital Ostrava, Ostrava, Czechia
| | - Zbyněk Vrba
- Lung Department, Krnov Combined Medical Facility, Krnov, Czechia
| | - Petr Hubáček
- Department of Medical Microbiology, Charles University, Prague, Czechia
- Motol University Hospital, Prague, Czechia
| | - Vladimír Havlíček
- Institute of Microbiology of the Czech Academy of Sciences, Prague, Czechia
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8
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Bain V, Barrientos ACMGDA, Suzuki L, Oliveira LAND, Litvinov N, Peron KR, Fernandes JF, Marques HHDS. Radiological patterns of pulmonary fungal infection in pediatric hematology and oncology patients. Radiol Bras 2022; 55:78-83. [PMID: 35414734 PMCID: PMC8993174 DOI: 10.1590/0100-3984.2021.0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 05/20/2021] [Indexed: 11/22/2022] Open
Abstract
Abstract Objective: To describe the radiological findings in pediatric patients with hematological or oncological diseases who also have an invasive fungal infection (IFI). Materials and Methods: This was a retrospective study of all patients with IFI admitted to a pediatric hematology and oncology hospital in Brazil between 2008 and 2014. Clinical and demographic data were collected. Chest computed tomography (CT) scans of the patients were reviewed by two independent radiologists. Results: We evaluated the chest CT scans of 40 pediatric patients diagnosed with an IFI. Twenty-seven patients (67.5%) had nodules with the halo sign, seven (17.5%) had cavities, two (5.0%) had nodules without the halo sign, and seven (17.5%) had consolidation. The patients with the halo sign and cavities were older (123 vs. 77 months of age; p = 0.03) and had less severe disease (34% vs. 73%; p = 0.04). Ten patients had a proven IFI: with Aspergillus sp. (n = 4); with Candida sp. (n = 5); or with Fusarium sp. (n = 1). Conclusion: A diagnosis of IFI should be considered in children and adolescents with risk factors and abnormal CT scans, even if the imaging findings are nonspecific.
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9
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Teh BW, Yeoh DK, Haeusler GM, Yannakou CK, Fleming S, Lindsay J, Slavin MA. Consensus guidelines for antifungal prophylaxis in haematological malignancy and haemopoietic stem cell transplantation, 2021. Intern Med J 2021; 51 Suppl 7:67-88. [PMID: 34937140 DOI: 10.1111/imj.15588] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Antifungal prophylaxis can reduce morbidity and mortality from invasive fungal disease (IFD). However, its use needs to be optimised and appropriately targeted to patients at highest risk to derive the most benefit. In addition to established risks for IFD, considerable recent progress in the treatment of malignancies has resulted in the development of new 'at-risk' groups. The changing epidemiology of IFD and emergence of drug resistance continue to impact choice of prophylaxis, highlighting the importance of active surveillance and knowledge of local epidemiology. These guidelines aim to highlight emerging risk groups and review the evidence and limitations around new formulations of established agents and new antifungal drugs. It provides recommendations around use and choice of antifungal prophylaxis, discusses the potential impact of the changing epidemiology of IFD and emergence of drug resistance, and future directions for risk stratification to assist optimal management of highly vulnerable patients.
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Affiliation(s)
- Benjamin W Teh
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia
| | - Daniel K Yeoh
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Infectious Diseases, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Gabrielle M Haeusler
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Infectious Diseases, Royal Children's Hospital, Melbourne, Victoria, Australia.,Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Costas K Yannakou
- Department of Molecular Oncology and Cancer Immunology, Epworth Freemasons Hospital, Epworth HealthCare, Melbourne, Victoria, Australia
| | - Shaun Fleming
- Malignant Haematology and Stem Cell Transplantation Service, Alfred Health, Melbourne, Victoria, Australia
| | - Julian Lindsay
- Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Department of Haematology, Royal North Shore Hospital, Sydney, New South Wales, Australia
| | - Monica A Slavin
- Department of Infectious Diseases, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, Victoria, Australia.,National Centre for Infections in Cancer, Peter MacCallum Cancer Centre, Melbourne, Victoria, Australia.,Immunocompromised Host Infection Service, Royal Melbourne Hospital, Melbourne, Victoria, Australia
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10
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Elkadi OA, Hassan R, Elanany M, Byrne HJ, Ramadan MA. Identification of Aspergillus species in human blood plasma by infrared spectroscopy and machine learning. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119259. [PMID: 33307345 DOI: 10.1016/j.saa.2020.119259] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 11/14/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Invasive Aspergillosis is a challenging infection that requires convenient, efficient, and cost-effective diagnostics. This study addresses the potential of infrared spectroscopy to satisfy this clinical need with the aid of machine learning. Two models, based on Partial Least Squares-Discriminant Analysis (PLS-DA), have been trained by a set of infrared spectral data of 9 Aspergillus-spiked and 7 Aspergillus-free plasma samples, and a set of 200 spectral data simulated by oversampling these 16 samples. Two further models have also been trained by the same sets but with auto-scaling performed prior to PLS-DA. These models were assessed using 45 mock samples, simulating the challenging samples of patients at risk of Invasive Aspergillosis, including the presence of drugs (9 tested) and other common pathogens (5 tested) as potential confounders. The simple model shows good prediction performance, yielding a total accuracy of 84.4%, while oversampling and autoscaling improved this accuracy to 93.3%. The results of this study have shown that infrared spectroscopy can identify Aspergillus species in blood plasma even in presence of potential confounders commonly present in blood of patients at risk of Invasive Aspergillosis.
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Affiliation(s)
- Omar Anwar Elkadi
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt; Dar Elsalam Cancer Center, Cairo, Egypt.
| | - Reem Hassan
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt.
| | - Mervat Elanany
- Department of Clinical Pathology, Faculty of Medicine, Cairo University, Cairo, Egypt.
| | - Hugh J Byrne
- FOCAS Research Institute, Technological University Dublin, City Campus, Dublin, Ireland.
| | - Mohammed A Ramadan
- Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
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11
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Lipopolysaccharide Binding Protein and Bactericidal/Permeability-Increasing Protein as Biomarkers for Invasive Pulmonary Aspergillosis. J Fungi (Basel) 2020; 6:jof6040304. [PMID: 33233831 PMCID: PMC7712449 DOI: 10.3390/jof6040304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 11/18/2020] [Accepted: 11/19/2020] [Indexed: 12/18/2022] Open
Abstract
Early diagnosis of invasive pulmonary aspergillosis (IPA) is crucial to prevent lethal disease in immunocompromized hosts. So far, lipopolysaccharide binding protein (LBP) and bactericidal/permeability-increasing protein (BPI) levels have not been evaluated as biomarkers for IPA. IL-8, previously introduced as a biomarker for IPA, was also included in this study. Bronchoalveolar lavage fluid (BALF) of IPA patients and control patients with non-infectious lung disease was collected according to clinical indications. Measurements in BALF displayed significantly higher levels of LBP (p < 0.0001), BPI (p = 0.0002) and IL-8 (p < 0.0001) in IPA compared to control patients. Receiver operating characteristic curve analysis revealed higher AUC for LBP (0.98, 95% CI 0.95–1.00) than BPI (0.84, 95% CI 0.70–0.97; p = 0.0301). Although not significantly different, AUC of IL-8 (0.93, 95% CI 0.85–1.00) also tended to be higher than AUC for BPI (p = 0.0624). When the subgroup of non-hematological patients was analyzed, test performance of LBP (AUC 0.99, 95% CI 0.97–1.00), BPI (AUC 0.97, 95% CI 0.91–1.00) and IL-8 (AUC 0.96, 95% CI: 0.90–1.00) converged. In conclusion, LBP and—to a lesser extend—BPI displayed high AUCs that were comparable to those of IL-8 for diagnosis of IPA in BALF. Further investigations are worthwhile, especially in non-hematological patients in whom sensitive biomarkers for IPA are lacking.
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Delgado-Araneda M, Valenzuela R, de la Maza V, Rabello M, Álvarez AM, Contardo V, Zubieta M, Gutierrez V, Claverie X, Torres JP, Salgado C, Tordecilla J, Varas M, Avilés CL, Venegas M, Villarroel M, Santolaya ME. Usefulness of serum galactomannan in initiating and modifying antifungal therapy in children with cancer and persistent high-risk febrile neutropenia. Mycoses 2020; 63:802-811. [PMID: 32347600 DOI: 10.1111/myc.13097] [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: 01/31/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Invasive fungal disease is a major cause of morbidity and mortality in children with cancer and high-risk febrile neutropenia (HRFN). Repeated serum galactomannan (sGM) measurements have been described as an effective tool to guide therapy in adults under suspicion of invasive aspergillosis. However, the utility of this approach has not been reported in paediatric population. OBJECTIVES To evaluate the usefulness of sGM measurements in initiating and modifying antifungal therapy (AFT) in children with cancer and persistent HRFN. PATIENTS/METHODS Nested case-control study in children with cancer and persistent HRFN episodes, between July 2013 and January 2019. Patients were classified as cases and controls depending on if they received AFT or not, respectively. Through odds ratio analysis, we assessed the role of sGM positivity in the AFT initiation decision. Then, we analysed the group of patients that initiated AFT, and compared those who had AFT modifications and those who did not, analysing different sGM kinetics thresholds. RESULTS A total of 191 episodes from children with persistent HRFN were enrolled, of which 107 received AFT and 84 did not. The median age was 7 years (IQR 4-12), 52% were male and 89% had a haematologic malignancy as underlying disease. Positive sGM was not associated with AFT initiation (OR 0.99, 95% CI 0.43-2.33, P = .99). A difference threshold in sGM Δ ≥ 0.3 sGM was significantly associated with AFT modification (OR 5.07, 95% CI 1.02- 25.70, P = .04). CONCLUSIONS Our results suggest the utility of serial sGM sampling during AFT in children with persistent HRFN.
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Affiliation(s)
- Matías Delgado-Araneda
- Department of Pediatrics, Residency and Medical Sciences Doctorate Program, Faculty of Medicine, Universidad de Chile, Santiago, Chile
| | - Romina Valenzuela
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Verónica de la Maza
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Marcela Rabello
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Ana M Álvarez
- Department of Pediatrics, Faculty of Medicine, Hospital San Juan de Dios, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Verónica Contardo
- Department of Pediatrics, Faculty of Medicine, Hospital Roberto del Río, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Marcela Zubieta
- Department of Pediatrics, Hospital Exequiel González Cortés, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Valentina Gutierrez
- Department of Pediatrics, Hospital Dr. Sótero del Río, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Ximena Claverie
- Department of Pediatrics, Hospital Dr. Sótero del Río, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Juan P Torres
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile
| | - Carmen Salgado
- Department of Pediatrics, Hospital Exequiel González Cortés, Faculty of Medicine, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Juan Tordecilla
- Department of Pediatrics, Faculty of Medicine, Hospital Roberto del Río, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Mónica Varas
- Department of Pediatrics, Faculty of Medicine, Hospital San Juan de Dios, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Carmen L Avilés
- Department of Pediatrics, Faculty of Medicine, Hospital San Borja Arriarán, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Marcela Venegas
- Department of Pediatrics, Faculty of Medicine, Hospital San Borja Arriarán, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - Milena Villarroel
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
| | - María E Santolaya
- Department of Pediatrics, Faculty of Medicine, Hospital Dr. Luis Calvo Mackenna, Universidad de Chile, Santiago, Chile.,Committee of Infectious Diseases, National Child Programme of Antineoplastic Drugs (PINDA), Santiago, Chile
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Abstract
Aspergillus fumigatus is a saprotrophic fungus; its primary habitat is the soil. In its ecological niche, the fungus has learned how to adapt and proliferate in hostile environments. This capacity has helped the fungus to resist and survive against human host defenses and, further, to be responsible for one of the most devastating lung infections in terms of morbidity and mortality. In this review, we will provide (i) a description of the biological cycle of A. fumigatus; (ii) a historical perspective of the spectrum of aspergillus disease and the current epidemiological status of these infections; (iii) an analysis of the modes of immune response against Aspergillus in immunocompetent and immunocompromised patients; (iv) an understanding of the pathways responsible for fungal virulence and their host molecular targets, with a specific focus on the cell wall; (v) the current status of the diagnosis of different clinical syndromes; and (vi) an overview of the available antifungal armamentarium and the therapeutic strategies in the clinical context. In addition, the emergence of new concepts, such as nutritional immunity and the integration and rewiring of multiple fungal metabolic activities occurring during lung invasion, has helped us to redefine the opportunistic pathogenesis of A. fumigatus.
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Affiliation(s)
- Jean-Paul Latgé
- School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Georgios Chamilos
- School of Medicine, University of Crete, Heraklion, Crete, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology, Heraklion, Crete, Greece
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Krylov VB, Solovev AS, Argunov DA, Latgé JP, Nifantiev NE. Reinvestigation of carbohydrate specificity of EB-A2 monoclonal antibody used in the immune detection of Aspergillus fumigatus galactomannan. Heliyon 2019; 5:e01173. [PMID: 30766929 PMCID: PMC6360342 DOI: 10.1016/j.heliyon.2019.e01173] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/20/2018] [Accepted: 01/23/2019] [Indexed: 02/07/2023] Open
Abstract
Great progresses have been made in the recent years in the detection of circulating galactofuranose-bearing molecules for the diagnosis of aspergillosis. However, the test used in the clinical practice is hampered by the occurrence of false positives. A glycoarray with dozens of oligosaccharides structurally related to the Aspergillus fumigatus galactomannan has allowed us to reinvestigate the carbohydrate specificity of the EB-A2 monoclonal antibody used in the PlateliaTM Aspergillus sandwich immune assay. We have now demonstrated that the mAb can recognize shorter oligosaccharides than the previously reported tetrasaccharide Galf-β-(1→5)-Galf-β-(1→5)-Galf-β-(1→5)-Galf-β and oligosaccharides which contains alternating β-(1→5)/β-(1→6)-linkages. This result could explain the occurrence of false-positive signals due to the presence of the abovementioned epitopes not only in A. fumigatus galactomannan but also in other bacteria and fungi.
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Affiliation(s)
- Vadim B. Krylov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Arsenii S. Solovev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Dmitry A. Argunov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Jean-Paul Latgé
- Unité des Aspergillus, Institut Pasteur, 25 Rue du Docteur Roux, 75724 Paris Cedex 15, France
- Corresponding author.
| | - Nikolay E. Nifantiev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
- Corresponding author.
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Ramos JT, Romero CA, Belda S, Candel FJ, Gallego BC, Fernández-Polo A, Antolín LF, Colino CG, Navarro ML, Neth O, Olbrich P, Rincón-López E, Contreras JR, Soler-Palacín P. Clinical practice update of antifungal prophylaxis in immunocompromised children. REVISTA ESPANOLA DE QUIMIOTERAPIA : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE QUIMIOTERAPIA 2019; 32:410-425. [PMID: 31507152 PMCID: PMC6790888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Due to the rise in the number and types of immunosuppressed patients, invasive fungal infections (IFI) are an increasing and major cause of morbidity and mortality in immunocompromised adults and children. There is a broad group of pediatric patients at risk for IFI in whom primary and/or secondary antifungal prophylaxis (AFP) should be considered despite scant evidence. Pediatric groups at risk for IFI includes extremely premature infants in some settings, while in high-risk children with cancer receiving chemotherapy or undergoing haematopoietic stem cell transplantation (HCT), AFP against yeast and moulds is usually recommended. For solid organ transplanted, children, prophylaxis depends on the type of transplant and associated risk factors. In children with primary or acquired immunodeficiency such as HIV or long-term immunosuppressive treatment, AFP depends on the type of immunodeficiency and the degree of immunosuppression. Chronic granulomatous disease is associated with a particular high-risk of IFI and anti-mould prophylaxis is always indicated. In contrast, AFP is not generally recommended in children with long stay in intensive care units. The choice of AFP is limited by the approval of antifungal agents in different age groups and by their pharmacokinetics characteristics. This document aims to review current available information on AFP in children and to provide a comprehensive proposal for each type of patient.
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Affiliation(s)
- José Tomás Ramos
- Department of Public and Mother-Child Health. Hospital Clínico San Carlos, Complutense University. Madrid.,Correspondence: José T. Ramos Amador Departmento de Salud Pública y Materno-Infantil. Complutense University. Madrid. Hospital Clínico San Carlos. IdISSC Health Research Institute Madrid. Spain. Avda Profesor Martín Lagos s/n. 28040. Phone: + 34 91 330 3486 E-mail:
| | - Concepción Alba Romero
- Department of Salud Pública y Materno-Infantil.Complutense University. Neonatology Unit. Hospital 12 de Octubre. Madrid
| | - Sylvia Belda
- Department of Pediatrics. Intensive Care Unit. Hospital 12 de Octubre. Madrid. Complutense University. Madrid
| | - Francisco Javier Candel
- Clinical Microbiology and Infectious Diseases Department. Transplant. Coordination Unit. IdISSC and IML Health Institutes. Hospital Clínico San Carlos. Madrid. Spain
| | - Begoña Carazo Gallego
- Department of Pediatrics. Sección de Enfermedades Infecciosas. Hospital Carlos Haya, Málaga
| | | | | | - Carmen Garrido Colino
- Department of Pediatrics. Sección de Hemato-oncología. Hospital Gregorio Marañón. Madrid
| | - María Luisa Navarro
- Department of Pediatrics. Sección de Enfermedades Infecciosas. Hospital Gregorio Marañón. Madrid
| | - Olaf Neth
- Department of Pediatrics. Sección Infectología, Reumatología e Inmunología Pediátrica. Hospital Universitario Virgen del Rocío, Sevilla
| | - Peter Olbrich
- Department of Pediatrics. Sección Infectología, Reumatología e Inmunología Pediátrica. Hospital Universitario Virgen del Rocío, Sevilla
| | - Elena Rincón-López
- Department of Pediatrics. Sección de Enfermedades Infecciosas. Hospital Gregorio Marañón. Madrid
| | - Jesús Ruiz Contreras
- Department of Pediatrics. Hospital 12 de Octubre. Madrid. Complutense University. Madrid
| | - Pere Soler-Palacín
- Pediatric Infectious Diseases and Immunodeficiencies Unit. Hospital Universitari Vall d’Hebron. Barcelona
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