scholarly journals Extensively drug-resistant tuberculosis case in the Thames Valley, UK and public health interventions

2011 ◽  
Vol 4 (4) ◽  
pp. 207-210 ◽  
Author(s):  
Muhammad Abid ◽  
Noel McCarthy ◽  
Luisa Saldaña ◽  
Tracey Langham ◽  
Anne McGown ◽  
...  
2019 ◽  
Vol 116 (46) ◽  
pp. 23284-23291 ◽  
Author(s):  
Tyler S. Brown ◽  
Lavanya Challagundla ◽  
Evan H. Baugh ◽  
Shaheed Vally Omar ◽  
Arkady Mustaev ◽  
...  

Antimicrobial-resistant (AMR) infections pose a major threat to global public health. Similar to other AMR pathogens, both historical and ongoing drug-resistant tuberculosis (TB) epidemics are characterized by transmission of a limited number of predominant Mycobacterium tuberculosis (Mtb) strains. Understanding how these predominant strains achieve sustained transmission, particularly during the critical period before they are detected via clinical or public health surveillance, can inform strategies for prevention and containment. In this study, we employ whole-genome sequence (WGS) data from TB clinical isolates collected in KwaZulu-Natal, South Africa to examine the pre-detection history of a successful strain of extensively drug-resistant (XDR) TB known as LAM4/KZN, first identified in a widely reported cluster of cases in 2005. We identify marked expansion of this strain concurrent with the onset of the generalized HIV epidemic 12 y prior to 2005, localize its geographic origin to a location in northeastern KwaZulu-Natal ∼400 km away from the site of the 2005 outbreak, and use protein structural modeling to propose a mechanism for how strain-specific rpoB mutations offset fitness costs associated with rifampin resistance in LAM4/KZN. Our findings highlight the importance of HIV coinfection, high preexisting rates of drug-resistant TB, human migration, and pathoadaptive evolution in the emergence and dispersal of this critical public health threat. We propose that integrating whole-genome sequencing into routine public health surveillance can enable the early detection and local containment of AMR pathogens before they achieve widespread dispersal.


2007 ◽  
Vol 12 (49) ◽  
Author(s):  
J Chemardin ◽  
M C Paty ◽  
S Renard-Dubois ◽  
N Veziris ◽  
D Antoine

Contact tracing of air travellers exposed to cases of multi-drug-resistant (MDR) and extensively drug-resistant (XDR) tuberculosis (TB) has become an increasingly important issue.


Respirology ◽  
2012 ◽  
Vol 17 (5) ◽  
pp. 772-791 ◽  
Author(s):  
NICHOLAS D. WALTER ◽  
MICHAEL STRONG ◽  
ROBERT BELKNAP ◽  
DIANE J. ORDWAY ◽  
CHARLES L. DALEY ◽  
...  

2014 ◽  
Vol 45 (1) ◽  
pp. 292-294 ◽  
Author(s):  
Luigi R. Codecasa ◽  
Giorgio Ciconali ◽  
Ester Mazzola ◽  
Maurizio Ferrarese ◽  
Daniela Cirillo ◽  
...  

JAMA ◽  
2007 ◽  
Vol 298 (16) ◽  
pp. 1861
Author(s):  
Howard Markel ◽  
Lawrence O. Gostin ◽  
David P. Fidler

2018 ◽  
Vol Volume 11 ◽  
pp. 239-246 ◽  
Author(s):  
Stephen Osei-Wusu ◽  
Michael Amo Omari ◽  
Adwoa Asante-Poku ◽  
Isaac Darko Otchere ◽  
Prince Asare ◽  
...  

2019 ◽  
Vol 8 (7) ◽  
Author(s):  
Syed Beenish Rufai ◽  
Sarman Singh

The emergence of extensively drug-resistant tuberculosis (XDR-TB) presents a considerable challenge and a public health concern due to the high mortality rate of this disease. Whole-genome sequencing (WGS) of XDR-TB isolates is thus essential for understanding the mechanism of drug resistance.


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