Table 3. PCR results of specimen processed by PBS and DW
Ann Clin Microbiol 2020;23:201-210. Evaluating the Use of Distilled Water for Washing Sodium Hydroxide in Mycobacterial Culture Download table Washing solution No.of specimen No. (%) of positive PCR for MTBC NTM Mycobacteria PBS 3,080 130 (4.2) 38 (1.2) 168 (5.4) DW 3,131 162 (5.2) 60 (1.9) 222 (7.1) Abbreviations: PCR, polymerase chain reaction; MTBC, Mycobacterium tuberculosis […]
Table 2. Comparison of MGIT 960 system and Ogawa medium results by PBS and DW
Ann Clin Microbiol 2020;23:201-210. Evaluating the Use of Distilled Water for Washing Sodium Hydroxide in Mycobacterial Culture Download table Washing solution No. (%) of positive culture for Total MGIT MGIT only Ogawa Ogawa only PBS 1,843 (100) 1,808 (98.1) 1,002 (54.4) 1,841 (45.6) 35 (1.9) DW 2,095 (100) 2,054 (98.0) 1,973 (46.4) 1,122 (53.6) 41 (2.0) […]
Table 1. Mycobacteria culture results of specimen processed by PBS and DW
Ann Clin Microbiol 2020;23:201-210. Evaluating the Use of Distilled Water for Washing Sodium Hydroxide in Mycobacterial Culture Download table Washing solution No. of specimen No. (%) of positive culture for No. (%) of contamination* All MTBC NTM PBS 14,532 1,843 (12.7) 684 (4.7) 1,159 (8.0) 907/14,023 (6.5) DW 14,291 2,095 (14.7) 754 (5.3) 1,341 (9.4) 563/13,794 […]
Table 3. Comparison of frequency and Ct and peak value of amplification curves of positive target genes in inconclusive results between COVID-19 cases and non-COVID-19 cases
Ann Clin Microbiol 2020;23:191-199. Causes and Clinical Relevance of Inconclusive SARS-CoV-2 Real-Time Reverse TranscriptionPCR Test Results Download table Target gene COVID-19 cases Non-COVID-19 cases No. (%) No. (%) of Ct ≥ 33 Ct, M ± SD Peak RFU, M ± SD No. (%) No. (%) of Ct ≥ 33 Ct, M ± SD […]
Table 2. Lot number of tested kits and results of retesting of samples in non-COVID-19 patients displaying inconclusive results
Ann Clin Microbiol 2020;23:191-199. Causes and Clinical Relevance of Inconclusive SARS-CoV-2 Real-Time Reverse TranscriptionPCR Test Results Download table Lot No. Period of use No. of inconclusive result / No. of tests (%) Result of retest Ct values of E gene* RP4520C12 2020.03.01. – 2020.03.13. 0 / 3944 (0) All negative 19.98 ± 0.45 RP4520C15 2020.03.12. […]
Table 1. Summary of rRT-PCR test producing inconclusive results from 11 COVID-19 patients
Ann Clin Microbiol 2020;23:191-199. Causes and Clinical Relevance of Inconclusive SARS-CoV-2 Real-Time Reverse TranscriptionPCR Test Results Download table Patient Anti-COVID-19 treatment Days from diagnosis to Ct values of the initial inconclusive result Days and number of consecutive test results from initial inconclusive results to negative conversion Admission Initial inconclusive result E RdRp N Days Pos […]
Fig. 2. Trends of Ct values of three target genes when consecutive SARS-CoV-2 rRT-PCR tests were conducted with nasopharyngeal swab samples from two COVID-19 patients. (A) The asymptomatic patient without treatment (patient 3). (B) The patient with severe symptoms under extracorporeal membrane oxygenation and low-dose steroid treatments (patient 4). Red arrows indicated inconclusive results
Ann Clin Microbiol 2020;23:191-199. Causes and Clinical Relevance of Inconclusive SARS-CoV-2 Real-Time Reverse TranscriptionPCR Test Results Download image
Fig. 1. Classification of the inconclusive results according to COVID-19 diagnosis and retest or consecutive test results. Abbreviation: COVID-19, coronavirus disease 19
Ann Clin Microbiol 2020;23:191-199. Causes and Clinical Relevance of Inconclusive SARS-CoV-2 Real-Time Reverse TranscriptionPCR Test Results Download image
Table 3. The number and rates of C. difficile infections by healthcare facility characteristics
Ann Clin Microbiol 2020;23:181-189. The Trend of Clostridioides difficile Infection in Korean Hospitals with the Analysis of Nationwide Sample Cohort Download table Characteristic Cases No. (Infection rate, %) Year 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Total P-value* Location Seoul […]
Table 2. The number and rates of C. difficile infections by the disease severity
Ann Clin Microbiol 2020;23:181-189. The Trend of Clostridioides difficile Infection in Korean Hospitals with the Analysis of Nationwide Sample Cohort Download table Variable Cases No. (Infection rate, %) Year 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Total P-value* CCI 0 […]