2020
DOI: 10.3201/eid2603.191314
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Mycobacterium tuberculosis Beijing Lineage and Risk for Tuberculosis in Child Household Contacts, Peru

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Cited by 16 publications
(20 citation statements)
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References 44 publications
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“…In line with previous studies and also in our study, Beijing strains were more common among BCG‐vaccinated TB patients in comparison to non‐immunized patients [18,21,29]. Despite this, there was a statistically significant relationship between Beijing‐ Mtb and drug resistance among people who had a history of BCG vaccination.…”
Section: Discussionsupporting
confidence: 92%
See 1 more Smart Citation
“…In line with previous studies and also in our study, Beijing strains were more common among BCG‐vaccinated TB patients in comparison to non‐immunized patients [18,21,29]. Despite this, there was a statistically significant relationship between Beijing‐ Mtb and drug resistance among people who had a history of BCG vaccination.…”
Section: Discussionsupporting
confidence: 92%
“…The genealogy of BCG strains displays a series of genomic alterations; including regions of deletion, this region included T cell epitopes that are essential to the human immune system response but had been lost in BCG strains to varying degrees [20]. Some studies have shown that BCG vaccination protects less efficiently against infection by Beijing strains compared with other genotypes [18,21]; conversely, there is a hypothesis that exposure to BCG‐induced immunity may select vaccine‐escape microorganism variants with a higher capacity for disease breakdown (vaccine‐escape specification) [22].…”
Section: Discussionmentioning
confidence: 99%
“…It is clear that immune responses differed when leukocytes were challenged with different lineages of Mtb . Such differences might explain the variability in vaccine efficacy among lineages of M. tuberculosis ( Chae & Shin, 2018 ; Huang et al., 2020 ). Further comparisons among lineages, such as using intracellular proteomic analysis and animal-infection models, might clarify this situation.…”
Section: Discussionmentioning
confidence: 99%
“…The sublineages with the lowest prevalence in Peru are X (3.1%), T (7.4%), S (0.32%), U (0.32%), MANU (0.01%), Ghana (0.01%), and EAI (0.01%); the presence of these sublineages correlates with the movement of people from the Asian region (Table 1). The percentage of unidentified strains (12.2%) is relatively low due to the implementation of molecular techniques such as spoligotyping, MIRU-VNTR (24 and 12 loci), and WGS to determine the transmission routes of TB (Barletta et al, 2013(Barletta et al, , 2015Cáceres et al, 2014;Cohen et al, 2011;Farhat et al, 2019;Grandjean et al, 2015Grandjean et al, , 2017Huang et al, 2020;Sheen et al, 2013;Taype et al, 2012).…”
Section: Perumentioning
confidence: 99%
“…Prevalence of the Beijing sublineage in Peru is the highest in South America (10.3%) due to population migration from China associated with labor, commercial and economic factors. China is one of the hotspots with the highest level of TB prevalence in the world (Grandjean et al, 2017;Huang et al, 2020;PAHO, 2020). XDR-TB reports also have a www.anatomiadigital.org higher incidence in this nation than in South America as a whole.…”
Section: Brazil and Peru Are Hotspots For Tuberculosis In South Americamentioning
confidence: 99%