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Cho J, Han S, Lee M, Uh Y. T059 Performance evaluation of Atellica® IM CK-MB, myoglobin and BNP assays on the Atellica® solution. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jung IY, Choi W, Kim J, Wang E, Park SW, Lee WJ, Choi JY, Kim HY, Uh Y, Kim YK. Nosocomial person-to-person transmission of severe fever with thrombocytopenia syndrome. Clin Microbiol Infect 2019; 25:633.e1-633.e4. [PMID: 30677496 DOI: 10.1016/j.cmi.2019.01.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/10/2019] [Accepted: 01/12/2019] [Indexed: 10/27/2022]
Abstract
OBJECTIVES This study is an epidemiologic investigation of nosocomial severe fever with thrombocytopenia syndrome virus (SFTSV) transmission among healthcare workers (HCWs) after contact with an index patient. The aim of this study was to determine whether exposure to blood or bloody respiratory secretion is associated with human-to-human transmission of SFTSV. METHODS Eleven days after the index patient died, two HCWs who had close exposure to the patient presented with typical symptoms of SFTS. An epidemiological investigation was conducted on all 25 HCWs who had been in close contact with the index patient. Clinical and laboratory data were collected, and transmission rate before and after the index patient had haemorrhagic manifestations was analysed. RESULTS Among 25 HCWs who had direct contact with the index patient, five HCWs were confirmed to have SFTS. All five HCWs had contact to blood or bloody respiratory secretions of the index patient without adequate use of personal protective equipment (PPE). No HCW with contact before haemorrhagic manifestations of the index patient contracted SFTS. Overall, the transmission rate was higher for HCWs who had contact after the index patient had haemorrhagic manifestations (33.3%, five of 15 HCWs, vs. 0%, zero of ten HCWs, p 0.041). CONCLUSIONS In HCWs who are inadequately protected, person-to-person transmission of SFTSV may be associated with contact with blood or bloody respiratory secretions. Therefore, universal precaution and full PPE is highly recommended for protection against SFTSV when there are signs of bleeding.
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Affiliation(s)
- I Y Jung
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - W Choi
- Division of Arboviruses, National Institute of Health, Korea Center for Disease Control & Prevention, Chungcheongbuk-do, South Korea
| | - J Kim
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - E Wang
- Division of Arboviruses, National Institute of Health, Korea Center for Disease Control & Prevention, Chungcheongbuk-do, South Korea
| | - S-W Park
- Division of Arboviruses, National Institute of Health, Korea Center for Disease Control & Prevention, Chungcheongbuk-do, South Korea
| | - W-J Lee
- Division of Arboviruses, National Institute of Health, Korea Center for Disease Control & Prevention, Chungcheongbuk-do, South Korea
| | - J Y Choi
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - H Y Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Y Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Y K Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea.
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Lee J, Kim MY, Kang SH, Kim J, Uh Y, Yoon KJ, Kim HS. The gamma-glutamyl transferase to platelet ratio and the FIB-4 score are noninvasive markers to determine the severity of liver fibrosis in chronic hepatitis B infection. Br J Biomed Sci 2018; 75:128-132. [DOI: 10.1080/09674845.2018.1459147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- J Lee
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - MY Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - SH Kang
- Department of Internal Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - J Kim
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - Y Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - KJ Yoon
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - HS Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine , Seoul, Korea
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Wang HY, Uh Y, Kim S, Lee H. Quantamatrix Multiplexed Assay Platform system for direct detection of bacteria and antibiotic resistance determinants in positive blood culture bottles. Clin Microbiol Infect 2016; 23:333.e1-333.e7. [PMID: 27998819 DOI: 10.1016/j.cmi.2016.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/12/2016] [Accepted: 12/12/2016] [Indexed: 11/16/2022]
Abstract
OBJECTIVES Rapid and accurate identification of the causative pathogens of bloodstream infections (BSIs) is crucial for initiating appropriate antimicrobial therapy, which decreases the related morbidity and mortality rates. The aim of this study was to evaluate the usefulness of a newly developed multiplexed, bead-based bioassay system, the Quantamatrix Multiplexed Assay Platform (QMAP) system, obtained directly from blood culture bottles, to simultaneously detect the presence of bacteria and identify the genes for antibiotic resistance. METHODS The QMAP system was used to evaluate 619 blood culture bottles from patients with BSIs and to compare the results of conventional culture methods. RESULTS Using conventional bacterial cultures as the reference standard, the sensitivity, specificity, positive predictive value, and negative predictive value of the QMAP system for detection of bacterial pathogens in positive blood culture (PBC) samples were 99.8% (n=592, 95% CI 0.9852-1.000, p <0.001), 100% (95% CI 0.983-1.000, p <0.001), 100% (95% CI 0.9922-1.000, p <0.001), and 99.5% (95% CI 0.9695-1.000, p <0.001), respectively. In addition, sensitivity and specificity of the QMAP system for identification of the genes for antibiotic resistance were 99.4% (n=158, 95% CI 0.9617-0.9999, p <0.009) and 99.6% (95% CI 0.9763-0.9999, p <0.0001), respectively. CONCLUSIONS Obtaining results using the QMAP system takes about 3 hr, while culture methods can take 48-72 hr. Therefore, analysis using the QMAP system is rapid and reliable for characterizing causative pathogens in BSIs.
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Affiliation(s)
- H Y Wang
- Optipharm, Inc., Wonju Eco Environmental Technology Center, Gangwon, Republic of Korea
| | - Y Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Gangwon, Republic of Korea
| | - S Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Gangwon, Republic of Korea
| | - H Lee
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Gangwon, Republic of Korea.
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Wang HY, Kim J, Kim S, Park SD, Kim HY, Choi HK, Uh Y, Lee H. Performance of PCR-REBA assay for screening and identifying pathogens directly in whole blood of patients with suspected sepsis. J Appl Microbiol 2015; 119:1433-42. [PMID: 26299262 DOI: 10.1111/jam.12941] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/23/2015] [Accepted: 08/11/2015] [Indexed: 12/01/2022]
Abstract
AIMS Rapid and accurate identification of a broad range of bacterial and fungal pathogens is the key to successful management of patients with bloodstream infections (BSIs). The aim of this study was to evaluate the diagnostic performance of PCR-REBA Sepsis-ID test for the detection of BSIs pathogens. METHODS AND RESULTS EDTA anticoagulated blood for REBA Sepsis-ID assay and blood culture samples from 882 patients with suspected sepsis were simultaneously collected from January 2014 to December 2014. Of 115 patients with positive blood culture, 64 (55·7%) were Gram-positive bacteria, 35 (30·4%) were Gram-negative bacteria, 1 (0·9%) was Candida albicans and 15 (13·0%) were polymicrobial infections. The concordance rate of blood culture system and PCR-REBA Sepsis ID test was 83·0% (95% confidence interval (CI), 79·8-84·8, P < 0·0001). Compared to blood culture, the diagnosis of bacterial proven pathogens by PCR-REBA revealed 81·0% (95% CI, 73·4-86·8, P < 0·0001) sensitivity, 83·4% (95% CI, 80·0-85·4, P < 0·0001) specificity, 80·9% positive and 95·8% negative predictive values respectively. In 10 cases with PCR-REBA positive but blood culture negative, the levels of C-reactive protein were significantly elevated 18·5 mg dl(-1) (SD ± 13·7, 95% CI 1·8-41·9) and six cases has been proven to have pathogen by bacterial 16S rRNA sequencing. Although the sensitivity for pathogen identification was not significantly different between PCR-REBA and blood culture (P = 0·5), the combination of the two methods resulted in a significantly increased rate of pathogen detection (P = 0·002). The results of this study suggested that PCR-REBA may be helpful when added to blood culture in the diagnosis and management of sepsis. CONCLUSIONS PCR-REBA Sepsis-ID test is a useful tool for the rapid identification of pathogenic isolates in whole blood to ensure adequate treatment for the causative agents of BSIs. SIGNIFICANCE AND IMPACT OF THE STUDY Although the cost of molecular diagnostic assays is higher than the cost of conventional methods, clinical and economic cost-benefit analysis is still needed. PCR-REBA may provide essential information for accelerating therapeutic decisions to ensure effective treatment with antibiotics in the acute phase of pathogen infection.
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Affiliation(s)
- H-Y Wang
- Wonju Eco Environmental Technology Center, M&D, Inc., Wonju, Korea
| | - J Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju, Korea
| | - S Kim
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju, Korea
| | - S D Park
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - H Y Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - H K Choi
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Y Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - H Lee
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University, Wonju, Korea
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Kim YK, Hahn S, Uh Y, Im DJ, Lim YL, Choi HK, Kim HY. Comparable characteristics of tuberculous and non-tuberculous mycobacterial cavitary lung diseases. Int J Tuberc Lung Dis 2014; 18:725-9. [DOI: 10.5588/ijtld.13.0871] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Y. K. Kim
- Department of Internal Medicine, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - S. Hahn
- Department of Radiology, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - Y. Uh
- Department of Laboratory Medicine, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - D-J. Im
- Department of Radiology, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - Y. L. Lim
- Department of Internal Medicine, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - H. K. Choi
- Department of Internal Medicine, Yonsei University, Wonju College of Medicine, Wonju, Korea
| | - H. Y. Kim
- Department of Internal Medicine, Yonsei University, Wonju College of Medicine, Wonju, Korea
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Park Y, Lee H, Chin B, Han S, Hong S, Hong S, Kim H, Uh Y, Shin H, Choo E, Han SH, Song W, Jeong S, Lee K, Kim J. Acquisition of extensive drug-resistant Pseudomonas aeruginosa among hospitalized patients: risk factors and resistance mechanisms to carbapenems. J Hosp Infect 2011; 79:54-8. [DOI: 10.1016/j.jhin.2011.05.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Accepted: 05/03/2011] [Indexed: 10/18/2022]
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Song W, Lee C, Kim J, Kim H, Uh Y, Lee J, Lee K. P669 Epidemiology and genotypes of plasmid-mediated AmpC β-lactamase produced by clinical isolates of Klebsiella pneumoniae in Korea. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70510-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
In order to determine possible trends in the susceptibility and distribution of group B streptococci (GBS) serotypes in a Korean population and to elucidate any relationship between the serotypes and the antimicrobial susceptibility patterns found, 185 clinical isolates of GBS were investigated between 1990 and 1998. The rate of erythromycin resistance increased from 0% during the period 1990-1995 to 26% in 1996 and 40% in 1998. The overall rates of resistance to erythromycin and clindamycin were 20% and 22.2%, respectively. GBS serotype V was not detected until 1995, but it was isolated in 1996 and ranked third in frequency (18.8%) in 1997. Among the 37 erythromycin-resistant strains detected, 54.1% and 29.7% were of serotype III and V, respectively. The emerging erythromycin resistance detected among these GBS isolates was mainly due to a sudden increase in the incidence of GBS serotypes with multidrug-resistant phenotypes.
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Affiliation(s)
- Y Uh
- Department of Clinical Pathology, Yonsei University Wonju College of Medicine, Korea.
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Uh Y, Jang IH, Yoon KJ, Lee CH, Kwon JY, Kim MC. Colonization rates and serotypes of group B streptococci isolated from pregnant women in a Korean tertiary hospital. Eur J Clin Microbiol Infect Dis 1997; 16:753-6. [PMID: 9405948 DOI: 10.1007/bf01709259] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In a study designed to provide data on the rates of maternal carriage of group B streptococci (GBS) in Korean women, vaginal, anorectal, and urethral swab specimens from 459 pregnant women and ear canal and umbilicus swabs from their 288 neonates were cultured with new Granada medium and selective Todd-Hewitt broth. Additionally, the serotypes of 64 isolates of GBS and the minimal inhibitory concentrations of seven antimicrobial agents for these isolates were determined. The rate of colonization by GBS in pregnant women and in their babies was 5.9% (27/459) and 0.7% (2/288), respectively. The rates of resistance of GBS isolated from pregnant women were 13.3% to clindamycin, 5% to erythromycin, and 98.3% to tetracycline. The majority of GBS isolates from pregnant women belonged to serotypes Ib (48.3%), Ia (24.1%), and III (20.7%).
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Affiliation(s)
- Y Uh
- Department of Clinical Pathology, Yonsei University Wonju College of Medicine, Korea
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