van Helden PD

Xpert MTB/RIF Ultra and Xpert MTB/RIF for diagnosis of tuberculosis in an HIV-endemic setting with a high burden of previous tuberculosis: a two-cohort diagnostic accuracy study
Mishra H, Reeve BWP, Palmer Z, Caldwell J, Dolby T, Naidoo CC, Jackson GJ, Schumacher SG, Denkinger CM, Diacon AH, van Helden PD, Marx FM, Warren RM, Theron G

The Lancet Respiratory Medicine

(2020)

https://doi.org/10.1016/S2213-2600(19)30370-4
Whole genome sequencing provides additional insights into recurrent tuberculosis classified as endogenous reactivation by IS6110 DNA fingerprinting
Dippenaar A, De Vos M, Marx FM, Adroub SA, van Helden PD, Pain A, Sampson SL, Warren RM

Infection, Genetics and Evolution

(2019)

https://doi.org/10.1016/j.meegid.2019.103948
The risk of tuberculosis reinfection soon after cure of a first disease episode is extremely high in a hyperendemic community
Uys P, Brand HH, Warren R, van der Spuy G, Hoal E, van Helden PD

PLoS One

(2015)

https://doi.org/10.1371/journal.pone.0144487
The temporal dynamics of relapse and reinfection tuberculosis after successful treatment: a retrospective cohort study
Marx FM, Dunbar R, Enarson DA, Williams BG, Warren RM, van der Spuy G, van Helden PD, Beyers N

Clinical Infectious Diseases

(2014)

https://doi.org/10.1093/cid/ciu186
High prevalence of tuberculosis and insufficient case detection in two communities in the Western Cape, South Africa
Claassens MM, van Schalkwyk C, den Haan L, Floyd S, Dunbar R, van Helden PD, Godfrey-Faussett P, Ayles H, Borgdorff M, Enarson DA, Beyers N

PLoS One

(2013)

https://doi.org/10.1371/journal.pone.0058689
Towards eliminating bias in cluster analysis of TB genotyped data
van Schalkwyk C, Cule M, Welte A, van Helden PD, van der Spuy G, Uys P

PLoS ONE

(2012)

https://doi.org/10.1371/journal.pone.0034109
Potential of rapid diagnosis for controlling drug-susceptible and drug-resistant tuberculosis in communities where mycobacterium tuberculosis infections are highly prevalent
Uys PW, van Helden PD, Warren R, Murray M, Victor TC

Journal of Clinical Microbiology

(2009)

https://doi.org/10.1128/JCM.02289-08
Time to detection of Mycobacterium tuberculosis in BACTEC systems as a viable alternative to colony counting
Pheiffer C, Carroll NM, Beyers N, Donald P, Duncan K, Uys P, van Helden PD

The International Journal of Tuberculosis and Lung Disease

(2008)

https://pubmed.ncbi.nlm.nih.gov/18544206/
Tuberculosis reinfection rate as a proportion of total infection rate correlates with the logarithm of the incidence rate: a mathematical model
Hargrove JW, Uys PW, van Helden PD

Journal of the Royal Society Interface

(2008)

https://doi.org/10.1098/rsif.2008.0184
The effect of diagnostic delays on the drop-out rate and the total delay to diagnosis of tuberculosis
Hargrove JW, Williams BG, Uys PW, van Helden PD, Millen SJ

PLoS One

(2008)

https://doi.org/10.1371/journal.pone.0001933