[HTML][HTML] Zoonotic Mycobacterium bovis–induced tuberculosis in humans

…, SDC Parsons, PD Van Helden… - Emerging infectious …, 2013 - ncbi.nlm.nih.gov
We aimed to estimate the global occurrence of zoonotic tuberculosis (TB) caused by
Mycobacterium bovis or M. caprae infections in humans by performing a multilingual, systematic …

Drug resistance in Mycobacterium tuberculosis

…, GE Louw, RM Warren, PD Van Helden… - Current issues in …, 2006 - mdpi.com
Anti-tuberculosis drugs are a two-edged sword. While they destroy pathogenic M. tuberculosis
they also select for drug resistant bacteria against which those drugs are then ineffective. …

Mixed-strain Mycobacterium tuberculosis infections and the implications for tuberculosis treatment and control

T Cohen, PD van Helden, D Wilson… - Clinical microbiology …, 2012 - Am Soc Microbiol
Numerous studies have reported that individuals can simultaneously harbor multiple distinct
strains of Mycobacterium tuberculosis . To date, there has been limited discussion of the …

[HTML][HTML] Mycobacterium tuberculosis complex genetic diversity: mining the fourth international spoligotyping database (SpolDB4) for classification, population …

…, MC Guttierez, PM Hawkey, PD Van Helden… - BMC microbiology, 2006 - Springer
Background The Direct Repeat locus of the Mycobacterium tuberculosis complex (MTC) is a
member of the CRISPR (Clustered regularly interspaced short palindromic repeats) …

[HTML][HTML] Exogenous reinfection as a cause of recurrent tuberculosis after curative treatment

…, DA Enarson, N Beyers, PD van Helden - … England Journal of …, 1999 - Mass Medical Soc
Background For decades it has been assumed that postprimary tuberculosis is usually
caused by reactivation of endogenous infection rather than by a new, exogenous infection. …

Rate of reinfection tuberculosis after successful treatment is higher than rate of new tuberculosis

…, DA Enarson, MA Behr, PD Van Helden - American journal of …, 2005 - atsjournals.org
Rationale: In a high–tuberculosis (TB) incidence area of Cape Town, South Africa, there is a
very high rate of unexplained recurrent TB. The incidence of new bacteriologically …

[HTML][HTML] Evolution and expansion of the Mycobacterium tuberculosis PE and PPE multigene families and their association with the duplication of the ESAT-6 (esx) …

…, SL Sampson, H Lee, Y Kim, PD Van Helden… - BMC evolutionary …, 2006 - Springer
Background The PE and PPE multigene families of Mycobacterium tuberculosis comprise
about 10% of the coding potential of the genome. The function of the proteins encoded by …

Proportion of tuberculosis transmission that takes place in households in a high-incidence area

…, MW Borgdorff, MA Behr, N Beyers, PD van Helden - The Lancet, 2004 - thelancet.com
The prevalence of infection among household contacts of people with tuberculosis is high.
This information frequently guides active case finding. We analysed DNA fingerprints of …

Patients with active tuberculosis often have different strains in the same sputum specimen

…, N Beyers, NCG van Pittius, PD van Helden - American journal of …, 2004 - atsjournals.org
It is generally accepted that tuberculosis results from a single infection with a single Mycobacterium
tuberculosis strain. Such infections are thought to confer protective immunity against …

[HTML][HTML] Novel Mycobacterium tuberculosis complex pathogen, M. mungi

…, AL Michel, M Williams, PD van Helden… - Emerging infectious …, 2010 - ncbi.nlm.nih.gov
Seven outbreaks involving increasing numbers of banded mongoose troops and high death
rates have been documented. We identified a Mycobacterium tuberculosis complex …