SUSA502

Information about SUSA502

Published on September 3, 2007

Author: Eagle

Source: authorstream.com

Content

XDR and MDR TB Urgent Research Priorities:  XDR and MDR TB Urgent Research Priorities Gerald Friedland MD Yale School of Medicine Nelson R Mandela School of Medicine TF CARES The Year of MDR XDR TB :  The Year of MDR XDR TB CDC, WHO report on global XDR TB XDR TB defined Global distribution Africa, India and Southeast Asia missing HIV not recorded Rural South Africa-Tugela Ferry epidemic Higher rates both of MDR and XDR TB HIV associated Nosocomial transmission Extremely high mortality Global burden estimates andgt;400,000 MDR, andgt;26,000 XDR TB Expert meetings and recommendations WHO, CDC, NIH, Forum, national and international meetings The ASPE-single patient airborne event Slide3:  Countries with XDR-TB Confirmed cases (May 2007) Czech Republic The boundaries and names shown and the designations used on this map do not imply the expression of any opinion whatsoever on the part of the WHO concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.  WHO 2005. All rights reserved Ecuador Georgia Argentina Bangladesh Germany Republic of Korea Armenia Russian Federation South Africa Portugal Latvia Mexico Peru USA Brazil UK Sweden Thailand Chile Based on information provided to WHO Stop TB Department 1 May 2007 Spain Islamic Republic of Iran China, Hong Kong SAR France Japan Norway Canada Italy Netherlands Estonia Lithuania Ireland Romania Israel Azerbaijan Poland Slovenia M/XDR TB is a wake up alarm call:  MDR and XDR TB uncovers past and current deficiencies in TB knowledge, strategies and programs Illustrates global nature TB drug resistance For high TB and HIV prevalence areas, threatens success of both StopTB and historic ARV roll out For high TB and low HIV prevalence areas with high HIV incidence, alerts ominous danger M/XDR TB is a wake up alarm call MDR XDR TB Research Priorities:  MDR XDR TB Research Priorities Broad and complex areas of need Epidemiology Diagnosis Treatment Urgency requires both short term and longer term goals, approaches, and solutions Operational research necessary New Resources critical Two Case Studies MDR/XDR TBboth illustrate same challenges:  Two Case Studies MDR/XDR TB both illustrate same challenges Hospital acquired XDR-TB:  Hospital acquired XDR-TB Epidemiology:  Epidemiology Desperate need for epidemiologic characterization and interventions Short term What is the best way to quickly characterize the global extent of XDR and XDT TB? What is best way to characterize 'hot spots'? How can information on drug resistance from highest TB burden countries be developed and assembled, particularly in areas with limited laboratory capacity? How to define primary and acquired resistance and determine role of community and nosocomial transmission be determined? What is role and best way to use molecular epidemiologic techniques? How can transmission be interrupted? Longer term How can long term sustainable surveillance data be acquired? What is the relationship between resistance, virulence, specific strains? Diagnostics:  Diagnostics Desperate need for modern, rapid M.TB diagnosis and drug susceptibility testing (first and second line drugs, point of care) Short term Are there simple clinical and laboratory methods to predict drug resistance? How to expand and make more widely available existing technologies? Standard culture and DST Expansion of SL DST in existing labs Should these be leapfrogged by newer technologies? Which rapid tests are most useful and practical in resource limited settings? Mycobacterial culture and DST- MODS Rapid rifampin based resistance Which of available promising rapid tests (rifampin based resistance) best? Expand rapid testing technologies be developed to include second line drugs? Longer term How to make widely available best rapid diagnostic technologies and facilities? Can diagnostic research be enhanced and respected? How to train and retain laboratory personnel? Therapeutics:  Therapeutics Desperate need for new drugs and shorter regimens Short term How to best develop public-private partnerships for drug development? How can drug evaluation and approval process be speeded up? How to exploit new and more flexible designs for studies? 'Salvage therapy', OBT vs new drug? Shorter follow-up? Can surrogate markers for clinical outcomes be developed and tested? Is there a role for expanded access of new drugs before approval? Are there important first and SLD TB and ARV pK and pD interactions and added toxicities? How to develop and employ novel treatment delivery strategies for SLD-treatment? Decentralized community based SLD treatment Long term How to better support basic research in drug development? Special HIV and TB Issues:  Special HIV and TB Issues Universal access to antiretroviral therapy (decrease susceptible population) Short term How to accelerate ARV roll out? When to start?-will starting earlier reduce TB drug resistance incidence and prevalence? Strengthening TB programs Short and long term How to promote treatment completion? What parts of programs need most strengthening to avert drug resistance? Programmatic collaboration and integration Short and long term How to best define and implement integration and collaboration? What is effectiveness of these in reducing drug resistance? Urgent need to interrupt transmission:  Urgent need to interrupt transmission Urgent need to interrupt transmission :  Urgent need to interrupt transmission Primary nosocomial transmission critical- no or limited infection control Short term focus on developing, implementing and monitoring site appropriate infection control strategies in health care facilities What is the best method to develop site specific administrative environmental, personal strategies? How to implement and monitor existing strategies? How to best protect health care workers? How to study effectiveness and best demonstrate reduction in transmission of drug resistance-individually and in concert? What is the role of enforced confinement? Long term Vaccine Alleviation of social and economic conditions and health disparities that breed both TB and HIV Future projections Tugela FerryEffect of infection control interventions(2007-20012):  Future projections Tugela Ferry Effect of infection control interventions (2007-20012) If no new interventions are introduced, a total of ~1,300 cases of XDR tuberculosis predicted Over half nosocomially transmitted. Implementing and testing effectiveness of recommended infection control strategies critical Combining available interventions could significantly avert new XDR TB infections reduced hospitalization time, shift tooutpatient therapy, rapid drug resistance testing, HIV treatment improved ventilation, reasonable tuberculosis isolation facilities mask use Slide15:  Slow CO2 concentration decay with windows closed 0.5 ACH Windows opened CO2 release Rapid decay with windows open 12 ACH TF CARESTugela Ferry Care and Research Collaboration:  TF CARES Tugela Ferry Care and Research Collaboration Philanjalo Tony Moll Nelson Mandela School of Medicine AW Sturm Prashini Moodley Umesh Lalloo Supported by Doris Duke Charitable Foundation and Irene Diamond Fund Yale School of Medicine Gerald Friedland Jason Andrews Sanjay, Basu Albert Einstein College of Medicine Neel Gandhi Sarita Shah

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