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Dai Y, Gao J, Jiang M. Case Report: A rare infection of multidrug-resistant Aeromonas caviae in a pediatric case with acute lymphoblastic leukemia and review of the literature. Front Pediatr 2024; 12:1233600. [PMID: 38803640 PMCID: PMC11128555 DOI: 10.3389/fped.2024.1233600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 04/30/2024] [Indexed: 05/29/2024] Open
Abstract
Aeromonas caviae infection of the bloodstream and intestine is a rare and severe opportunistic infection in immunocompromised people. In Southwest China, we first reported a case of bloodstream and intestinal infection with multidrug-resistant (MDR) Aeromonas caviae in a 4-year-old child with T-cell acute lymphoblastic leukemia. Blood and stool cultures were used to identify the infection. The selection of antibiotics was based on clinical expertise and medication sensitivity tests. We used linezolid, levofloxacin, and polymyxin B to treat the patient aggressively. Aeromonas caviae infection is uncommon in juvenile acute lymphoblastic leukemia. Doctors should be aware of the likelihood of opportunistic infection during the post-chemotherapy bone marrow suppression period. We further conducted a review of the literature and performed a detailed analysis of Aeromonas infection in pediatric leukemia. It is becoming increasingly apparent that antibiotic is abused domestically and abroad, resulting in the sharp increase of MDR bacteria. In general, most of the Aeromonas isolates are susceptible to third- or fourth-generation cephalosporins, aminoglycosides, quinolones, and carbapenem, but drug-resistant strains are being reported increasingly. We summarized the drug resistance rate of Aeromonas caviae and Aeromonas hydrophila in China in the last 10 years. Early recognition and effective treatment will improve prognosis and reduce mortality.
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Affiliation(s)
- Yiling Dai
- Department of Pediatric Hematology and Oncology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Ju Gao
- Department of Pediatric Hematology and Oncology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
| | - Mingyan Jiang
- Department of Pediatric Hematology and Oncology, West China Second University Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children, Sichuan University, Ministry of Education, Chengdu, China
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2
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Xia Y, Zhu X, Wu C. Metformin-associated severe lactic acidosis combined with multi-organ insufficiency induced by infection with Aeromonas veronii: A case report. Medicine (Baltimore) 2023; 102:e32659. [PMID: 36637931 PMCID: PMC9839295 DOI: 10.1097/md.0000000000032659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
RATIONALE Lactic acidosis is a disease in which lactic acid accumulates in the blood and causes acidosis in the patient. The criteria for diagnosis are a lactate level of >2 mmol/L in the blood and a blood pH of <7.2. PATIENT CONCERNS A 72-year-old Asian female with a history of diabetes for 20+ years was admitted to the hospital with the chief complaint of "dry mouth, polydipsia for 20+ years, loss of appetite for 5+ days, vomiting for 1-day." She was admitted with a blood gas pH of 6.795, and a lactate level of >30 mmol/L. DIAGNOSES Type 2 diabetes mellitus with lactic acidosis, ketoacidosis, chronic renal insufficiency, hypertensive disease, and coronary arteriosclerotic heart disease. INTERVENTIONS She was treated with symptomatic rehydration and ketone reduction immediately, but then became unconscious and was admitted to the intensive care unit, where she was administered symptomatic support and continuous renal replacement therapy. As the blood culture showed Aeromonas veronii, she was administered a sensitive antibiotic in conjunction. OUTCOMES However, after achieving a stable internal environment and good infection control, the patient's family decided to discontinue treatment because of persistent heart failure with acute exacerbation of chronic renal insufficiency complicated by gastrointestinal bleeding. LESSONS Lactic acidosis has low incidence, poor prognosis, and high morbidity and mortality rates. Special attention should be paid to infection-induced acidosis, especially in patients with combined multi-organ insufficiency. Early diagnosis and active management can improve the patient prognosis.
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Affiliation(s)
- Yu Xia
- Department of Anesthesiology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Xiaofeng Zhu
- Department of Critical Care Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Changxue Wu
- Department of Anesthesiology, School of Clinical Medicine, Southwest Medical University, Luzhou, Sichuan Province, China
- * Correspondence: Changxue Wu, Department of Anesthesiology, School of Clinical Medicine, Southwest Medical University, No. 5, Section 3, Zhongshan Road, Luzhou, Sichuan Province 646000, China (e-mail: )
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Complexation of a Polypeptide-Polyelectrolytes Bioparticle as a Biomaterial of Antibacterial Activity. Pharmaceutics 2022; 14:pharmaceutics14122746. [PMID: 36559240 PMCID: PMC9786851 DOI: 10.3390/pharmaceutics14122746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/01/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
The development of biomaterials to enable application of antimicrobial peptides represents a strategy of high and current interest. In this study, a bioparticle was produced by the complexation between an antimicrobial polypeptide and the biocompatible and biodegradable polysaccharides chitosan-N-arginine and alginate, giving rise to a colloidal polyelectrolytic complex of pH-responsive properties. The inclusion of the polypeptide in the bioparticle structure largely increases the binding sites of complexation during the bioparticles production, leading to its effective incorporation. After lyophilization, detailed evaluation of colloidal structure of redispersed bioparticles evidenced nano or microparticles with size, polydispersity and zeta potential dependent on pH and ionic strength, and the dependence was not withdrawn with the polypeptide inclusion. Significant increase of pore edge tension in giant vesicles evidenced effective interaction of the polypeptide-bioparticle with lipid model membrane. Antibacterial activity against Aeromonas dhakensis was effective at 0.1% and equal for the isolated polypeptide and the same complexed in bioparticle, which opens perspectives to the composite material as an applicable antibacterial system.
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Stanbaugh CL, Abter EI, Tompkins AL. Aeromonas veronii Cellulitis, Bacteremia, and Sepsis in a Patient With Liver Cirrhosis and End-Stage Renal Disease Following a Minor Abrasion With Exposure to Pond Water: A Case Report and Literature Review. IDCases 2022; 30:e01631. [DOI: 10.1016/j.idcr.2022.e01631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/31/2022] [Indexed: 11/09/2022] Open
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Valcarcel B, De-la-Cruz-Ku G, Malpica L, Enriquez-Vera D. Clinical features and outcome of Aeromonas sobria bacteremia in pediatric and adult patients with hematologic malignancies: A single-center retrospective study in Peru. PLoS One 2021; 16:e0255910. [PMID: 34379680 PMCID: PMC8357087 DOI: 10.1371/journal.pone.0255910] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022] Open
Abstract
Background Previous studies have found that healthcare-associated bacteremia (HAB) by Aeromonas species is associated with mortality. However, there is limited data on this outcome in patients with hematologic malignancies. This study aimed to identify the clinical features of patients with malignant hematologic diseases diagnosed with Aeromonas sobria bacteremia and to evaluate whether the type of bacteremia, community-acquired bacteremia (CAB) or HAB, is associated with mortality. Methods We retrospectively reviewed the clinical records of pediatric and adult patients between January 2000 and December 2017. Clinical characteristics were compared between CAB and HAB. Additionally, we stratified based on age group. Survival outcomes were assessed with Kaplan-Meier curves and a multivariate Cox regression analysis. Results A total of 37 patients (median age 24 years) were identified; 23 (62%) had HAB and 14 (38%) had CAB. Overall, the most common presenting symptom was abdominal pain (41%). Acute lymphoblastic leukemia (n = 12/15, 80%) and acute myeloid leukemia (n = 8/22, 36%) were the primary hematologic malignancies in pediatric and adult patients, respectively. CAB patients had worse overall survival (OS) rates at 30 days in all (43% versus HAB 91%, p = 0.006) and adult patients (30% versus HAB 92%, p = 0.002). Cox regression analysis found that quick Sequential Organ Failure Assessment and CAB were statistically significant factors associated with mortality. Low antimicrobial-resistant was noted, except for ciprofloxacin (n = 5/37, 14%). Conclusion Our study found a worse OS among patients with hematologic malignancies and CAB by Aeromonas sobria. Our results suggest that patients with CAB present with a worse disease severity. These findings should aid clinicians to determine the survival prognosis in this population.
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Affiliation(s)
- Bryan Valcarcel
- Facultad de Ciencias de la Salud, Escuela de Medicina Humana, Universidad Científica del Sur, Lima, Perú
- * E-mail:
| | - Gabriel De-la-Cruz-Ku
- Facultad de Ciencias de la Salud, Escuela de Medicina Humana, Universidad Científica del Sur, Lima, Perú
| | - Luis Malpica
- Division of Cancer Medicine, Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Daniel Enriquez-Vera
- Departmento de Hematología y Medicina Oncológica, Instituto Nacional de Enfermedades Neoplásicas, Lima, Perú
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Miyagi K, Shimoji N, Shimoji S, Tahara R, Uechi A, Tamaki I, Oshiro H, Komiyama A, Tedokon M, Hirai I. Comparison of species, virulence genes and clones of Aeromonas isolates from clinical specimens and well water in Okinawa Prefecture, Japan. J Appl Microbiol 2021; 131:1515-1530. [PMID: 33570830 DOI: 10.1111/jam.15038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 01/21/2021] [Accepted: 02/08/2021] [Indexed: 11/29/2022]
Abstract
AIMS To reveal the sources of Aeromonas infection in Okinawa Prefecture of Japan, the species, virulence genes and clones of strains isolated from clinical specimens and well water were compared. METHODS AND RESULTS The properties of both isolates were investigated by sequencing of rpoD, detection of 10 virulence genes using PCR and genotyping with pulsed-field gel electrophoresis. In all, 68 clinical and 146 well water strains of Aeromonas were isolated and the main species were A. caviae, A. dhakensis, A. hydrophila and A. veronii biovar sobria. Aeromonas dhakensis possessed various virulence genes; however, A. caviae possessed only fla. The same or similar clones were distributed in certain areas of Okinawa and one clone had survived several months in the biliary system of two patients, respectively. CONCLUSION Although the same Aeromonas clone was not isolated from clinical and well water samples, our study revealed the detected patterns of virulence genes in both isolates, the distribution of identical/similar clones in the Okinawan environment and long-time survival in patient's organs. SIGNIFICANCE AND IMPACT OF THE STUDY We investigated the association between Aeromonas patients and well water exposure. This study provides the properties of species, virulence genes and clones of Aeromonas isolated from samples of these origins.
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Affiliation(s)
- K Miyagi
- Laboratory of Microbiology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - N Shimoji
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - S Shimoji
- Laboratory of Microbiology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan.,Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - R Tahara
- Laboratory of Microbiology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
| | - A Uechi
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan.,Division of Clinical Laboratory and Blood Transfusion, University Hospital of the Ryukyus, Okinawa, Japan
| | - I Tamaki
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - H Oshiro
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - A Komiyama
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - M Tedokon
- Department of Clinical Laboratory, Urasoe General Hospital, Okinawa, Japan
| | - I Hirai
- Laboratory of Microbiology, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa, Japan
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Huang M, Chen H, Li C, Liu Y, Gan C, El-Sayed Ahmed MAEG, Liu R, Shen C, Zhong R, Tian GB, Huang X, Xia J. Rapid Fulminant Progression and Mortality Secondary to Aeromonas dhakensis Septicemia with Hepatitis B Virus Infection Following the Ingestion of Snakehead Fish in Mainland China: A Case Report. Foodborne Pathog Dis 2020; 17:743-749. [PMID: 32985901 DOI: 10.1089/fpd.2019.2780] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Aeromonas dhakensis is an important ubiquitous Gram-negative and freshwater bacterium detected in different reservoirs. It can cause invasive diseases in humans. Herein, we report the first case in Mainland China of a fulminant death of a 29-year-old man as a result of a new, unexpected association between septicemic A. dhakensis and hepatitis B viral infection (HBV). Herein, the patient died from multiple organ failure 5 d postadmission after the ingestion of Snakehead Fish meal. The isolated bacterium was initially misidentified as Aeromonas hydrophila using VITEK-2, while whole-genome sequencing (WGS) revealed that the isolate is A. dhakensis. WGS revealed the occurrence of three antimicrobial genes of resistance: imiH, cphA2, and blaOXA-12; besides, major virulence factors were detected. In silico, multilocus sequence typing (MLST) showed that our A. dhakensis 17FW001 belonged to a novel sequence type (ST557). A comparative genomic analysis of our isolate with nine selected Aeromonas species was done, which elucidated the pathogenicity of our A. dhakensis. In conclusion, we reported for the first time the association between A. dhakensis and HBV in Mainland China. We revealed that septicemic A. dhakensis could result in severe adverse clinical outcomes that end up with unexpected fulminant death especially when it is accompanied with HBV and sheds light on the virulence of A. dhakensis and the high rate of its misdiagnosis that requires to urgently consider screening of all cases of A. dhakensis for HBV in the future. Besides, caution should be taken while dealing with snakeheads which act as a vector for A. dhakensis.
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Affiliation(s)
- Mingxing Huang
- Department of Infectious Diseases, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Hongtao Chen
- Clinical Laboratory, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Chunna Li
- Department of Infectious Diseases, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Yan Liu
- Clinical Laboratory, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Chongjie Gan
- Department of Infectious Diseases, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Mohamed Abd El-Gawad El-Sayed Ahmed
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China.,Department of Microbiology and Immunology, Faculty of Pharmaceutical Sciences and Drug Manufacturing, Misr University for Science and Technology (MUST), Cairo, 6th of October City, Egypt
| | - Ruihong Liu
- United Laboratory of the Fifth Affiliated Hospital and BGI, Department of Experimental Medicine, Guangdong Provincial Engineering Research Center of Molecular Imaging, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
| | - Cong Shen
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China
| | - Ruoxuan Zhong
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China
| | - Guo-Bao Tian
- Department of Immunology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China.,Key Laboratory of Tropical Diseases Control (Sun Yat-sen University), Ministry of Education, Guangzhou, China
| | - Xi Huang
- Program of Pathobiology and Immunology, Fifth Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Zhuhai, China
| | - Jinyu Xia
- Department of Infectious Diseases, Fifth Affiliated Hospital, Sun Yat-Sen University, Zhuhai, China
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Koutsoumanis K, Allende A, Alvarez‐Ordóñez A, Bolton D, Chemaly M, Davies R, De Cesare A, Herman L, Hilbert F, Lindqvist R, Nauta M, Peixe L, Ru G, Simmons M, Skandamis P, Suffredini E, Arason S, Bekaert K, García MR, Georgiadis M, Messens W, Mosbach‐Schulz O, Bover‐Cid S. The use of the so-called 'tubs' for transporting and storing fresh fishery products. EFSA J 2020; 18:e06091. [PMID: 32874299 PMCID: PMC7448070 DOI: 10.2903/j.efsa.2020.6091] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
On-land transport/storage of fresh fishery products (FFP) for up to 3 days in 'tubs' of three-layered poly-ethylene filled with freshwater and ice was compared to the currently authorised practice (fish boxes of high-density poly-ethylene filled with ice). The impact on the survival and growth of biological hazards in fish and the histamine production in fish species associated with a high amount of histidine was assessed. In different modelling scenarios, the FFP are stored on-board in freshwater or seawater/ice (in tubs) and once on-land they are 'handled' (i.e. sorted or gutted and/or filleted) and transferred to either tubs or boxes. The temperature of the FFP was assumed to be the most influential factor affecting relevant hazards. Under reasonably foreseeable 'abusive' scenarios and using a conservative modelling approach, the growth of the relevant hazards (i.e. Listeria monocytogenes, Aeromonas spp. and non-proteolytic Clostridium botulinum), is expected to be < 0.2 log10 units higher in tubs than in boxes after 3 days when the initial temperature of the fish is 0°C ('keeping' process). Starting at 7°C ('cooling-keeping' process), the expected difference in the growth potential is higher (< 1 log10 for A. hydrophila and < 0.5 log10 for the other two hazards) due to the poorer cooling capacity of water and ice (tub) compared with ice (box). The survival of relevant hazards is not or is negligibly impacted. Histamine formation due to growth of Morganella psychrotolerans under the 'keeping' or 'cooling-keeping' process can be up to 0.4 ppm and 1.5 ppm higher, respectively, in tubs as compared to boxes after 3 days, without reaching the legal limit of 100 ppm. The water uptake associated with the storage of the FFP in tubs (which may be up to 6%) does not make a relevant contribution to the differences in microbial growth potential compared to boxes.
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Chen PL, Lamy B, Ko WC. Aeromonas dhakensis, an Increasingly Recognized Human Pathogen. Front Microbiol 2016; 7:793. [PMID: 27303382 PMCID: PMC4882333 DOI: 10.3389/fmicb.2016.00793] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 05/11/2016] [Indexed: 12/18/2022] Open
Abstract
Aeromonas dhakensis was first isolated from children with diarrhea in Dhaka, Bangladesh and described in 2002. In the past decade, increasing evidence indicate this species is widely distributed in the environment and can cause a variety of infections both in human and animals, especially in coastal areas. A. dhakensis is often misidentified as A. hydrophila, A. veronii, or A. caviae by commercial phenotypic tests in the clinical laboratory. Correct identification relies on molecular methods. Increasingly used matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF MS) may be able to identify Aeromonas specie rapidly and accurately. A. dhakensis has shown its potent virulence in different animal models and clinical infections. Although several virulence factors had been reported, no single mechanism is conclusive. Characteristically A. dhakensis is the principal species causing soft tissue infection and bacteremia, especially among patients with liver cirrhosis or malignancy. Of note, A. dhakensis bacteremia is more lethal than bacteremia due to other Aeromonas species. The role of this species in gastroenteritis remains controversial. Third generation cephalosporins and carbapenems should be used cautiously in the treatment of severe A. dhakensis infection due to the presence of AmpC ββ-lactamase and metallo-β-lactamase genes, and optimal regimens may be cefepime or fluoroquinolones. Studies of bacterial virulence factors and associated host responses may provide the chance to understand the heterogeneous virulence between species. The hypothesis A. dhakensis with varied geographic prevalence and enhanced virulence that compared to other Aeromonas species warrants more investigations.
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Affiliation(s)
- Po-Lin Chen
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainan, Taiwan; Center for Infection Control, National Cheng Kung University HospitalTainan, Taiwan
| | - Brigitte Lamy
- Laboratoire de Bactériologie-Virologie, Équipe Pathogènes Hydriques Santé Environnements, UMR 5569 HydroSciences Montpellier, Université de MontpellierMontpellier, France; Laboratoire de Bactériologie, Centre Hospitalier Régional Universitaire de MontpellierMontpellier, France
| | - Wen-Chien Ko
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung UniversityTainan, Taiwan; Center for Infection Control, National Cheng Kung University HospitalTainan, Taiwan
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Murata M, Morinaga Y, Akamatsu N, Matsuda J, Uno N, Kosai K, Hasegawa H, Okada M, Moriuchi H, Yanagihara K. The Rapid Induction of Carbapenem-Resistance in an Aeromonas dhakensis Blood Isolate. Jpn J Infect Dis 2016; 69:439-41. [DOI: 10.7883/yoken.jjid.2015.098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Mika Murata
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Yoshitomo Morinaga
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Norihiko Akamatsu
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Junichi Matsuda
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Naoki Uno
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Kosuke Kosai
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | - Hiroo Hasegawa
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
| | | | | | - Katsunori Yanagihara
- Department of Laboratory Medicine, Nagasaki University Graduate School of Biomedical Sciences
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Morinaga Y, Yanagihara K, Eugenin FLL, Beaz-Hidalgo R, Kohno S, Figueras Salvat MJ. Identification error of Aeromonas aquariorum: A causative agent of septicemia. Diagn Microbiol Infect Dis 2013; 76:106-9. [DOI: 10.1016/j.diagmicrobio.2013.01.019] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 01/19/2013] [Indexed: 12/01/2022]
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A foodborne outbreak of Aeromonas hydrophila in a college, Xingyi City, Guizhou, China, 2012. Western Pac Surveill Response J 2012; 3:39-43. [PMID: 23908938 DOI: 10.5365/wpsar.2012.3.4.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND On 12 May 2012, over 200 college students with acute diarrhoea were reported to the Guizhou Center for Disease Control and Prevention. We conducted an investigation to identify the agent and mode of transmission and to recommend control measures. METHODS A suspected case was a person at the college with onset of ≥ two of the following symptoms: diarrhoea (more than three loose stools in 24 hours), abdominal pain, vomiting or fever (> 37.5C) between 6 and 15 May 2012. A confirmed case also had a positive Aeromonas hydrophila culture from a stool sample. A retrospective-cohort study of 902 students compared attack rates (AR) by dining place, meals and food history. We reviewed the implicated premise, its processes and preparation of implicated food. RESULTS We identified 349 suspected cases (AR = 14%) and isolated Aeromonas hydrophila from three stools of 15 cases. Students who ate in cafeteria A were more likely to be ill compared to those eating in other places (relative risk [RR]: 3.1, 95% confidence interval [CI]: 2.0-4.8). The cohort study implicated cold cucumber (RR: 2.6, 95% CI: 2.0-3.3) and houttuynia dishes (RR: 1.8, 95% CI: 1.4-2.3). Environmental investigation showed that vegetables were washed in polluted water from a tank close to the sewage ditch, then left at 30 °C for two hours before serving. The Escherichia coli count of the tank was well above the standard for drinking-water. CONCLUSION This outbreak of Aeromonas hydrophila was most probably caused by salad ingredients washed in contaminated tank water. We recommended enhancing training of foodhandlers, ensuring tanks and sewerage systems comply with appropriate standards and adequate monitoring of drinking-water sources.
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