Journal Article > ResearchFull Text
PLOS Med. 28 August 2012; Volume 9 (Issue 8); DOI:10.1371/journal.pmed.1001300
Ahuja SD, Ashkin D, Avendano M, Banerjee R, Bayona J, et al.
PLOS Med. 28 August 2012; Volume 9 (Issue 8); DOI:10.1371/journal.pmed.1001300
Treatment of multidrug resistant tuberculosis (MDR-TB) is lengthy, toxic, expensive, and has generally poor outcomes. We undertook an individual patient data meta-analysis to assess the impact on outcomes of the type, number, and duration of drugs used to treat MDR-TB.
Journal Article > ResearchFull Text
Lancet Infect Dis. 27 February 2012; Volume 12 (Issue 6); DOI:10.1016/S1473-3099(12)70033-6
Ettehad D, Schaaf HS, Seddon JA, Cooke GS, Ford NP
Lancet Infect Dis. 27 February 2012; Volume 12 (Issue 6); DOI:10.1016/S1473-3099(12)70033-6
Journal Article > ResearchFull Text
Public Health Action. 21 October 2014; Volume 4 (Issue 2); S47-53.; DOI:10.5588/pha.14.0041
Kuksa L, Riekstina V, Leimane V, Ozere I, Skenders G, et al.
Public Health Action. 21 October 2014; Volume 4 (Issue 2); S47-53.; DOI:10.5588/pha.14.0041
SETTING
Drug-resistant tuberculosis (TB) is an important public health problem in Latvia.
OBJECTIVE
To document trends, characteristics and treatment outcomes of registered patients with multi-drug-resistant (MDR-) and extensively drug-resistant (XDR-) TB in Latvia from 2000 to 2010.
DESIGN
A retrospective national cohort study.
RESULTS
Of 1779 patients, 1646 (92%) had MDR- and 133 (8%) XDR-TB. Over 11 years, the proportion of XDR-TB among MDR-TB patients increased from 2% to 18%. Compared to MDR-TB patients, those with XDR-TB were significantly more likely to have failed MDR-TB treatment (OR 8.4, 95%CI 4.3-16.2), have human immunodeficiency virus infection (OR 3.2, 95%CI 1.8-5.7), be illegal drug users (OR 5.7, 95%CI 2.6-11.6) or have had contact with MDR-TB patients (OR 1.9, 95%CI 1.3-2.8). Cure rates for XDR-TB were 50%. Compared with MDR-TB patients, those with XDR-TB had a higher risk of treatment failure (29% vs. 8%, respectively, P < 0.001). Unfavourable treatment outcomes were significantly associated with being male; having smear-positive disease; pulmonary cavities; failure, default or relapse after previous MDR-TB treatment; and a history of incarceration.
CONCLUSION
More MDR-TB in Latvia is now also XDR-TB. This study identified several risk factors for XDR-TB and, for unfavourable treatment outcomes, highlighting the importance of early diagnosis and appropriate management of MDR-/XDR-TB.
Drug-resistant tuberculosis (TB) is an important public health problem in Latvia.
OBJECTIVE
To document trends, characteristics and treatment outcomes of registered patients with multi-drug-resistant (MDR-) and extensively drug-resistant (XDR-) TB in Latvia from 2000 to 2010.
DESIGN
A retrospective national cohort study.
RESULTS
Of 1779 patients, 1646 (92%) had MDR- and 133 (8%) XDR-TB. Over 11 years, the proportion of XDR-TB among MDR-TB patients increased from 2% to 18%. Compared to MDR-TB patients, those with XDR-TB were significantly more likely to have failed MDR-TB treatment (OR 8.4, 95%CI 4.3-16.2), have human immunodeficiency virus infection (OR 3.2, 95%CI 1.8-5.7), be illegal drug users (OR 5.7, 95%CI 2.6-11.6) or have had contact with MDR-TB patients (OR 1.9, 95%CI 1.3-2.8). Cure rates for XDR-TB were 50%. Compared with MDR-TB patients, those with XDR-TB had a higher risk of treatment failure (29% vs. 8%, respectively, P < 0.001). Unfavourable treatment outcomes were significantly associated with being male; having smear-positive disease; pulmonary cavities; failure, default or relapse after previous MDR-TB treatment; and a history of incarceration.
CONCLUSION
More MDR-TB in Latvia is now also XDR-TB. This study identified several risk factors for XDR-TB and, for unfavourable treatment outcomes, highlighting the importance of early diagnosis and appropriate management of MDR-/XDR-TB.
Journal Article > ResearchFull Text
Public Health Action. 21 October 2014; Volume 4 (Issue 2); S54-8.; DOI:10.5588/pha.14.0040
Lucenko I, Riekstina V, Perevoscikovs J, Mozgis D, Khogali MA, et al.
Public Health Action. 21 October 2014; Volume 4 (Issue 2); S54-8.; DOI:10.5588/pha.14.0040
SETTING
Latvia, an Eastern European country with a high burden of tuberculosis (TB).
OBJECTIVE
To describe treatment outcomes among new drug-susceptible TB patients and assess the association of treatment outcomes with selected social determinants and risk factors.
DESIGN
A retrospective cohort study of patients aged ⩾15 years registered during 2006-2010, with a review of records in the National Tuberculosis Registry.
RESULTS
Of 2476 patients, 1704 (69%) were male; the median age was 42 years. About two thirds of patients were unemployed or retired, 7% were human immunodeficiency virus (HIV) positive and 35% had a history of alcohol use. Treatment success was achieved in 2167 (88%) patients. Older age, unemployment, HIV infection and alcohol use were found to be independently associated with unsuccessful treatment (death, loss to follow-up, failure, transfer out and other). For many variables, including HIV infection, diabetes mellitus and tobacco use, it was not possible to distinguish between 'not recorded' and 'not present' in the registry.
CONCLUSION
The treatment success rate among new drug-susceptible TB patients exceeded the 85% global target for TB control. Additional attention and support is required for most vulnerable patients, such as those who are unemployed or retired, HIV infected and alcohol users. The National TB Registry should be revised to improve definitions and staff should be trained for proper data collection and recording.
Latvia, an Eastern European country with a high burden of tuberculosis (TB).
OBJECTIVE
To describe treatment outcomes among new drug-susceptible TB patients and assess the association of treatment outcomes with selected social determinants and risk factors.
DESIGN
A retrospective cohort study of patients aged ⩾15 years registered during 2006-2010, with a review of records in the National Tuberculosis Registry.
RESULTS
Of 2476 patients, 1704 (69%) were male; the median age was 42 years. About two thirds of patients were unemployed or retired, 7% were human immunodeficiency virus (HIV) positive and 35% had a history of alcohol use. Treatment success was achieved in 2167 (88%) patients. Older age, unemployment, HIV infection and alcohol use were found to be independently associated with unsuccessful treatment (death, loss to follow-up, failure, transfer out and other). For many variables, including HIV infection, diabetes mellitus and tobacco use, it was not possible to distinguish between 'not recorded' and 'not present' in the registry.
CONCLUSION
The treatment success rate among new drug-susceptible TB patients exceeded the 85% global target for TB control. Additional attention and support is required for most vulnerable patients, such as those who are unemployed or retired, HIV infected and alcohol users. The National TB Registry should be revised to improve definitions and staff should be trained for proper data collection and recording.
Journal Article > ResearchFull Text
Int J Tuberc Lung Dis. 1 April 2018; Volume 22 (Issue 4); 407-412.; DOI:10.5588/ijtld.17.0706
Cox V, Brigden G, Crespo RH, Lessem E, Lynch S, et al.
Int J Tuberc Lung Dis. 1 April 2018; Volume 22 (Issue 4); 407-412.; DOI:10.5588/ijtld.17.0706
SETTING
The World Health Organization recommended two new drugs, bedaquiline (BDQ) and delamanid (DLM), for the treatment of multidrug-resistant tuberculosis (MDR-TB) in 2013 and 2014, respectively. An estimated one third of patients with MDR-TB would benefit from the inclusion of these drugs in their treatment regimens.
DESIGN
A convenience sample of 36 countries voluntarily reported monthly data on cumulative programmatic use of new drugs to the Drug-Resistant TB Scale-Up Treatment Action Team between 1 July 2015 and 31 June 2017. Programmatic use was defined as treatment for MDR-TB with newer drugs outside of clinical trials or compassionate use.
RESULTS
A total of 10 164 persons were started on BDQ and 688 started on DLM during the reporting period. Only 15.7% of the 69 213 persons estimated to need newer drugs over the study period were reported to have received them.
CONCLUSION
While there has been significant progress in some countries, uptake of the newer drugs has not kept pace with a conservative estimate of need; fewer than 20% of persons likely to benefit from either BDQ or DLM have received them. Concerted efforts are needed to ensure that the newer drugs are made available more widely for persons with MDR-TB in need of these therapeutic options.
The World Health Organization recommended two new drugs, bedaquiline (BDQ) and delamanid (DLM), for the treatment of multidrug-resistant tuberculosis (MDR-TB) in 2013 and 2014, respectively. An estimated one third of patients with MDR-TB would benefit from the inclusion of these drugs in their treatment regimens.
DESIGN
A convenience sample of 36 countries voluntarily reported monthly data on cumulative programmatic use of new drugs to the Drug-Resistant TB Scale-Up Treatment Action Team between 1 July 2015 and 31 June 2017. Programmatic use was defined as treatment for MDR-TB with newer drugs outside of clinical trials or compassionate use.
RESULTS
A total of 10 164 persons were started on BDQ and 688 started on DLM during the reporting period. Only 15.7% of the 69 213 persons estimated to need newer drugs over the study period were reported to have received them.
CONCLUSION
While there has been significant progress in some countries, uptake of the newer drugs has not kept pace with a conservative estimate of need; fewer than 20% of persons likely to benefit from either BDQ or DLM have received them. Concerted efforts are needed to ensure that the newer drugs are made available more widely for persons with MDR-TB in need of these therapeutic options.
Journal Article > ResearchFull Text
Int J Tuberc Lung Dis. 4 December 2012; Volume 17 (Issue 3); DOI:10.5588/ijtld.12.0537
Toczek A, Cox HS, du Cros PAK, Cooke GS, Ford NP
Int J Tuberc Lung Dis. 4 December 2012; Volume 17 (Issue 3); DOI:10.5588/ijtld.12.0537
BACKGROUND: Scaling up treatment for multidrug-resistant tuberculosis is a global health priority. However, current treatment regimens are long and associated with side effects, and default rates are consequently high. This systematic review aimed to identify strategies for reducing treatment default.METHODS: We conducted a systematic search up to May 2012 to identify studies describing interventions to support patients receiving treatment for multidrug-resistant tuberculosis (MDR-TB). The potential influence of study interventions were explored through subgroup analyses.RESULTS: A total of 75 studies provided outcomes for 18 294 patients across 31 countries. Default rates ranged from 0.5% to 56%, with a pooled proportion of 14.8% (95%CI 12.4-17.4). Strategies identified to be associated with lower default rates included the engagement of community health workers as directly observed treatment (DOT) providers, the provision of DOT throughout treatment, smaller cohort sizes and the provision of patient education.CONCLUSION: Current interventions to support adherence and retention are poorly described and based on weak evidence. This review was able to identify a number of promising, inexpensive interventions feasible for implementation and scale-up in MDR-TB programmes. The high default rates reported from many programmes underscore the pressing need to further refine and evaluate simple intervention packages to support patients.