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C R E A E Consortium to Respond Effectively to the AIDS-TB Epidemic

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Presentation on theme: "C R E A E Consortium to Respond Effectively to the AIDS-TB Epidemic"— Presentation transcript:

1 C R E A E Consortium to Respond Effectively to the AIDS-TB Epidemic
An International Research Partnership Supported by the Bill and Melinda Gates Foundation

2

3 DOTS and TB Control in Botswana
National TB Control Program – DOTS Cases diagnosed by microscopy All therapy supervised, short course rifampin-based No drugs available outside program High rates of treatment completion (>90%) Low rates of drug resistance (<2%) A highly successful medical intervention Kenyon et al. Int J TB Lung Dis 1999;3:4-11

4 TB Incidence and HIV Prevalence, Botswana
Failure of a “Successful” DOTS Program to Control TB Kenyon et al., Int J TB Lung Dis 1999;3:4-11

5 Reported TB Case Rates in Malawi 1988-2001
WHO TB Surveillance Report, 2003

6 DOTS and HIV-Related TB
DOTS is a critically important strategy for effective management of TB DOTS increases cure rates, reduces mortality and prevents emergence of drug resistance In the setting of HIV prevalence, DOTS alone is not sufficient to control TB incidence

7 C R E A E A brief history Autumn 2001 – concept sheet submitted
June 2002 – pilot grant for $3 million September 2002 – Annecy meeting February 2003 – proposals reviewed June 2003 – London meeting on case finding August 2003 – Seattle meeting with BMGF November 2003 – 2nd Seattle meeting January 2004 – final proposal submitted

8 End of the CREATE Meeting at the Bill and Melinda Gates Foundation, November 2003

9 Gates Foundation Press Briefing on TB and HIV at the Bangkok AIDS Conference July 15, 2004

10 C R E A E Mission To organize, implement and evaluate novel public health strategies to reduce tuberculosis incidence in populations with high rates of HIV and TB co-infection.

11 CREATE Objectives Design, implement and evaluate a portfolio of community-level trials of new strategies designed to reduce TB incidence in communities with high HIV prevalence. Transform global policies for HIV-related TB through evidence-based advocacy.

12 Strategies to Reduce TB/HIV in Addition to DOTS
Active or intensified case finding to identify cases transmitting infection, and who may die without treatment Treatment of latent TB infection to prevent disease in HIV+ (and HIV-) persons Household HIV/TB interventions linked to cases to promote active case finding, identify candidates for TB preventive therapy (and antiretroviral drugs), and reduce HIV transmission Combined ARV and IPT treatment programs to reduce probability of developing primary or reactivation TB

13 The CREATE Portfolio: Current Studies
Study Site Intervention(s) Design SA Gold Mines Thibelo TB Mass preventive therapy Cluster randomized trial Zambia/South Africa ZAMSTAR HH interventions, intensified case finding Community randomized trial Rio de Janeiro Preventive therapy and ARVs Phased implementation trial

14 Thibelo TB – Preventing TB
Gavin Churchyard, AURUM Health, South Africa

15 Mass Preventive Therapy with INH in South African Gold Miners
Design: Cluster randomized trial Setting: 24 mine shafts with workers Intervention: INH for all vs. standard of care (VCT with INH for HIV+, silicotics) Endpoint: TB incidence and prevalence after 5 years

16 ZAMSTAR – Zambia and South Africa Tuberculosis and AIDS reduction trial
Helen Ayles – ZAMBART Project, Lusaka; Nulda Beyers – Stellenbosch University, South Africa University of Zambia and Central Board of Health, Zambia City of Cape Town and Provincial Department of Health, South Africa London School of Hygiene and Tropical Medicine

17 ZAMSTAR Study Design 4-arm Community Randomised Trial Control
Improved standard of care Enhanced Tuberculosis Case Finding (ECF) Community level intervention (schools, market-places, open access diagnosis) Household level TB and HIV combined activities (HH) Household counselling intervention Both ECF and HH 24 communities (16 in Zambia, 8 in Western Cape) Primary endpoint: prevalence of culture proven tuberculosis after 4 years.

18 Study embedded in district health system
Control Communities will have DOTS strengthening TB/HIV Combined Activities (ProTEST) Reporting to Study and National TB Control All study communities will have enhanced monitoring and evaluation using standard indicators (TB; HIV; TB/HIV) and targets by evaluation team. All interventions will be conducted by study staff embedded in the district health system working as additional TB/HIV coordinators

19 Cluster-randomized Trial of INH Preventive Therapy in HIV Clinics in Rio de Janeiro Betina Durovni, Rio City Health Department Intervention: Implementation of a comprehensive policy of screening for and treating latent TB in all HIV-infected patients TST and INH PT for all TST+ Incentives/enablers to promote adherence One clinic phased-in each month until ALL clinics are receiving intervention

20 Methods – Study Design Control group:
Clinic populations that have not yet been phased-in to begin implementation Outcome – TB incidence over 3 years 29 4 Control Clinic 3 Follow-up 2 Intervention 1 Month

21 With HIV (10%) An Epidemic --_-_--_-
ZAMSTAR > Thibelo TB and Brazil ZAMSTAR 1.1 Infectious cases 18 HIV-ve 2 HIV+ve 1.8 cases 20 contacts Goldmines> ZAMSTAR and Brazil 0.8 cases An Epidemic 1.5 Non-Infectious

22 Stigma of HIV and TB CREATE Research portfolio
All IPT involves some targeted case finding Mass ACF Mass IPT Symptomatic ACF Thibelo TB CREATE Research portfolio Targeted ACF ZAMSTAR - Household Community IPT Community ECF ZAMSTAR - ECF Brazil Health centre ECF Stigma of HIV and TB Clinic based IPT DOTS- passive CF Spectrum of Case Finding for TB Spectrum of TB prevention

23 Existing TB and HIV policy and practice
Education and Training core Existing TB and HIV policy and practice Reduction in tuberculosis through transformed policies Biostatistics core New Knowledge Mass ACF Symptomatic ACF Targeted ACF Community ECF Health centre ECF DOTS- passive CF Community IPT Clinic based IPT Mass IPT CREATE Research portfolio Stigma Policy and Advocacy core Administration core

24 Executive Committee Richard Chaisson, Chair and PI (JHU)
Betina Durovni (SMS, Rio) Peter Godfrey-Faussett (LSHTM) Gavin Churchyard (Aurum Health Research) Larry Moulton (JHU) Paul Nunn (WHO) Peter Small (BMGF)* * Ex-Officio


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