scholarly journals Molecular epidemiology and drug susceptibility profiles of Mycobacterium tuberculosis complex isolates from Northern Ghana

Author(s):  
Samuel Kobina Ekuban Acquah ◽  
Prince Asare ◽  
Stephen Osei-Wusu ◽  
Portia Morgan ◽  
Theophilus Afum ◽  
...  
PLoS ONE ◽  
2017 ◽  
Vol 12 (2) ◽  
pp. e0172554 ◽  
Author(s):  
Christelle Vluggen ◽  
Karine Soetaert ◽  
Guido Groenen ◽  
Maryse Wanlin ◽  
Martine Spitaels ◽  
...  

2016 ◽  
Vol 132 (1) ◽  
pp. 56-64 ◽  
Author(s):  
Frances Tyrrell ◽  
Cortney Stafford ◽  
Mitchell Yakrus ◽  
Monica Youngblood ◽  
Andrew Hill ◽  
...  

Objective: We investigated data from US public health laboratories funded through the Centers for Disease Control and Prevention’s Tuberculosis Elimination and Laboratory Cooperative Agreement to document trends and challenges in meeting national objectives in tuberculosis (TB) laboratory diagnoses. Methods: We examined data on workload and turnaround time from public health laboratories’ progress reports during 2009-2013. We reviewed methodologies, laboratory roles, and progress toward rapid detection of Mycobacterium tuberculosis complex through nucleic acid amplification (NAA) testing. We compared selected data with TB surveillance reports to estimate public health laboratories’ contribution to national diagnostic services. Results: During the study period, culture and drug susceptibility tests decreased, but NAA testing increased. Public health laboratories achieved turnaround time benchmarks for drug susceptibility tests at lower levels than for acid-fast bacilli smear and identification from culture. NAA positivity in laboratories among surveillance-reported culture-positive TB cases increased from 26.6% (2355 of 8876) in 2009 to 40.0% (2948 of 7358) in 2013. Public health laboratories provided an estimated 50.9% (4285 of 8413 in 2010) to 57.2% (4210 of 7358 in 2013) of culture testing and 88.3% (6822 of 7727 in 2011) to 94.4% (6845 of 7250 in 2012) of drug susceptibility tests for all US TB cases. Conclusions: Public health laboratories contribute substantially to TB diagnoses in the United States. Although testing volumes mostly decreased, the increase in NAA testing indicates continued progress in rapid M tuberculosis complex detection.


PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e84487 ◽  
Author(s):  
Leo Kang-Yang Lim ◽  
Li Hwei Sng ◽  
Wah Win ◽  
Cynthia Bin-Eng Chee ◽  
Li Yang Hsu ◽  
...  

Author(s):  
Nazlı Arslan ◽  
Müge Hacer Özkarataş ◽  
Nuran Esen ◽  
Aydan Özkütük

Objective: Tuberculosis retains its importance as the only infectious disease in the world that affects 10 million people and causes 1.5 million deaths per se. The major obstacle in the elimination and control of tuberculosis is the emergence and spread of resistant tuberculosis cases. It was aimed to determine the current Mycobacterium tuberculosis complex and its susceptibility to antituberculosis drugs at Dokuz Eylül University Hospital. Method: In our study, the results of all samples sent between January 2013 and November 2019 were examined retrospectively for the presence of M. tuberculosis complex and drug susceptibility results. The samples were cultured in Löwenstein Jensen media and BACTEC MGIT 960 system. Drug susceptibility testing was performed with the BACTEC MGIT 960 SIRE kit in accordance with the recommendations of the manufacturer. Results: In a total of 473 (2.2%) of 21620 specimens M. tuberculosis complex was reproduced. The samples were classified as pulmonary (n:300; 63.4%) and extrapulmonary (n:173; 36.6%), samples. When repeated samples of the same patient, were excluded, positive culture test results were determined in a total of 365 patients. Susceptibility to all primary antituberculosis drugs was shown in 275 of 321 (85.7%) patients, while total rates of resistance to streptomycin, isoniazid, rifampicin and ethambutol were found in respective number of patients as follows: (n:24 (7.5%), 22 (6.8%), (n:7; 2.2%) and (n:2; 0.6%). The rate of MDR was 0.6% in 2 patients. Conclusion: In our hospital, streptomycin is the first-line antituberculosis drug with the highest resistance rate. All susceptibility rates were seen lower than the data reported in Turkey Tuberculosis Control Report and other studies of Turkey. Implementing drug surveillance program plays an important role for maintaining these low rates and for the management of tuberculosis.


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