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Mycobacterium tuberculosis lineages and anti-tuberculosis drug resistance in reference hospitals across Viet Nam.

Identifieur interne : 001B44 ( PubMed/Curation ); précédent : 001B43; suivant : 001B45

Mycobacterium tuberculosis lineages and anti-tuberculosis drug resistance in reference hospitals across Viet Nam.

Auteurs : Van Anh Thi Nguyen [Viêt Nam] ; Anne-Laure Ba Uls [Viêt Nam] ; Thanh Hoa Thi Tran [Viêt Nam] ; Kim Lien Thi Pham [Viêt Nam] ; Thai Son Nguyen [Viêt Nam] ; Hung Van Nguyen [Viêt Nam] ; Ngoc Lan Thi Nguyen [Viêt Nam] ; Nam Lien Thi Nguyen [Viêt Nam] ; Duc Anh Dang [Viêt Nam] ; Guy B. Marks [Australie] ; Marc Choisy [France]

Source :

RBID : pubmed:27464737

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English descriptors

Abstract

Mycobacterium tuberculosis, the tuberculosis (TB) pathogen, despite a low level of genetic diversity, has revealed a high variety of biological and epidemiological characteristics linked to their lineages, such as transmissibility, fitness and propensity to acquire drug resistance. This has important implications for the epidemiology of TB. We conducted this first countrywide cross-sectional study to identify the prevalent M. tuberculosis lineages and to assess their epidemiological associations and their relation to drug resistance. The study was conducted among isolates acquired in reference hospitals across Vietnam. Isolates with drug susceptibility testing profiles were identified for their lineages by spoligotyping. Logistic regression was used to investigate the association of M. tuberculosis lineages with location, age and sex of the patients and drug resistance levels.

DOI: 10.1186/s12866-016-0784-6
PubMed: 27464737

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<name sortKey="Marks, Guy B" sort="Marks, Guy B" uniqKey="Marks G" first="Guy B" last="Marks">Guy B. Marks</name>
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<term>Aged</term>
<term>Aged, 80 and over</term>
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<div type="abstract" xml:lang="en">Mycobacterium tuberculosis, the tuberculosis (TB) pathogen, despite a low level of genetic diversity, has revealed a high variety of biological and epidemiological characteristics linked to their lineages, such as transmissibility, fitness and propensity to acquire drug resistance. This has important implications for the epidemiology of TB. We conducted this first countrywide cross-sectional study to identify the prevalent M. tuberculosis lineages and to assess their epidemiological associations and their relation to drug resistance. The study was conducted among isolates acquired in reference hospitals across Vietnam. Isolates with drug susceptibility testing profiles were identified for their lineages by spoligotyping. Logistic regression was used to investigate the association of M. tuberculosis lineages with location, age and sex of the patients and drug resistance levels.</div>
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<Year>2016</Year>
<Month>07</Month>
<Day>28</Day>
</DateCreated>
<DateCompleted>
<Year>2017</Year>
<Month>06</Month>
<Day>26</Day>
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<Year>2017</Year>
<Month>06</Month>
<Day>26</Day>
</DateRevised>
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<ISSN IssnType="Electronic">1471-2180</ISSN>
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<Issue>1</Issue>
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<Year>2016</Year>
<Month>Jul</Month>
<Day>28</Day>
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<Title>BMC microbiology</Title>
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<ArticleTitle>Mycobacterium tuberculosis lineages and anti-tuberculosis drug resistance in reference hospitals across Viet Nam.</ArticleTitle>
<Pagination>
<MedlinePgn>167</MedlinePgn>
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<Abstract>
<AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">Mycobacterium tuberculosis, the tuberculosis (TB) pathogen, despite a low level of genetic diversity, has revealed a high variety of biological and epidemiological characteristics linked to their lineages, such as transmissibility, fitness and propensity to acquire drug resistance. This has important implications for the epidemiology of TB. We conducted this first countrywide cross-sectional study to identify the prevalent M. tuberculosis lineages and to assess their epidemiological associations and their relation to drug resistance. The study was conducted among isolates acquired in reference hospitals across Vietnam. Isolates with drug susceptibility testing profiles were identified for their lineages by spoligotyping. Logistic regression was used to investigate the association of M. tuberculosis lineages with location, age and sex of the patients and drug resistance levels.</AbstractText>
<AbstractText Label="RESULTS" NlmCategory="RESULTS">Results showed that the most prevalent lineage was Beijing (55.4 %), followed by EAI (27.5 %), T (6.4 %), LAM (1.3 %), Haarlem (1 %) and Zero type (0.3 %). The proportion of Beijing isolates in the North (70.4 %) and the South (68 %) was higher than in the Centre (28 %) (OR = 1.7 [95 % CI: 1.4-2.0], p < 0.0001), whereas the proportion of EAI isolates in the North (7.1 %) and the South (17 %) was much lower compared with the Centre (59 %) (OR = 0.5 [95 % CI: 0.4-0.6], p < 0.0001). Overall, Beijing isolates were the most likely to be drug-resistant and EAI isolates were the least likely to be drug-resistant, except in the South of Vietnam where EAI is also highly drug-resistant. The proportion of Beijing isolates was significantly higher (p < 0.01), and the proportion of EAI isolates was significantly lower (p < 0.05) in younger patients. The proportion of drug-resistance was higher in isolates collected from male patients and from patients in the middle age groups.</AbstractText>
<AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">The findings suggest ongoing replacement of EAI lineage, which is mainly more drug-susceptible with highly drug-resistant Beijing lineage in all studied regions of Vietnam. Male patients of working ages should be the focus for better control to prevent the emergence of drug-resistant TB.</AbstractText>
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<LastName>Nguyen</LastName>
<ForeName>Van Anh Thi</ForeName>
<Initials>VA</Initials>
<AffiliationInfo>
<Affiliation>Department of Bacteriology, National Institute of Hygiene Epidemiology, Hanoi, Vietnam. vananhtdt@gmail.com.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Laboratory of Tuberculosis, Department of Bacteriology, National Institute of Hygiene and Epidemiology, Hanoi, 10000, Vietnam. vananhtdt@gmail.com.</Affiliation>
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<Author ValidYN="Y">
<LastName>Bañuls</LastName>
<ForeName>Anne-Laure</ForeName>
<Initials>AL</Initials>
<AffiliationInfo>
<Affiliation>Department of Bacteriology, National Institute of Hygiene Epidemiology, Hanoi, Vietnam.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>MIVEGEC (IRD 224-CNRS 5290-Université de Montpellier), Centre IRD, Montpellier, France.</Affiliation>
</AffiliationInfo>
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<LastName>Tran</LastName>
<ForeName>Thanh Hoa Thi</ForeName>
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<Affiliation>Department of Bacteriology, National Institute of Hygiene Epidemiology, Hanoi, Vietnam.</Affiliation>
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