Global availability of susceptibility testing for second-line anti-tuberculosis agents.

BACKGROUND: The continued development of new anti-TB agents brings with it a demand for accompanying treatment regimens to prevent the development of resistance. Effectively meeting this demand requires an understanding of the pathogen´s susceptibility to various treatment options, which in turn makes access to antibiotic susceptibility testing (AST) a paramount consideration in the global treatment of TB.METHODS: A 12-question, quantitative and qualitative survey was developed to gauge global capacity and access to AST. The survey was disseminated to members of the Global Laboratory Initiative, Global Drug-resistant TB Initiative, and the TB section of the International Union Against Tuberculosis and Lung Disease to solicit responses from pertinent stakeholders.RESULTS: A total of 323 complete responses representing 84 countries and all WHO Regions were collected. AST capacity for fluoroquinolones and second-line injectables was high in all WHO Regions. AST capacity for the new and repurposed drugs is highest in the European Region, Region of the Americas and the Western Pacific Region, but quite limited in the African and Eastern Mediterranean Regions. The AST turnaround time for second-line drugs was delayed compared to that for first-line drugs as samples needed to be sent farther for analysis. Common barriers to AST for second-line drugs were lack of specimen transportation infrastructure, high costs, and lack of specialised laboratory workers and specialised laboratory facilities.CONCLUSION: Without expanding global access to AST, the growing availability of new treatment options will likely be threatened by accompanying increase in resistance. There is an earnest and pressing need to improve capacity and access to AST alongside treatment options.

Experiences of introducing new drugs for drug-resistant TB at the ALERT Hospital, Addis Ababa, Ethiopia, 2017-2019.

BACKGROUND: Drug-resistant TB (DR-TB) remains a major public health concern. DR-TB patient data from ALERT (All Africa Leprosy, Tuberculosis and Rehabilitation Training Centre) Hospital, Addis Ababa, Ethiopia, who received bedaquiline (BDQ) and/or delamanid (DLM) containing regimens were analysed. RESULTS: From 2017 to 2019, 51 DR-TB patients were enrolled. Of 33 patients, 31 (93.9%) had culture converted at 6 months. Of those with final outcomes, 77% (n = 10) were cured. Thirty (58.8%) developed adverse events, the most frequent of which were gastrointestinal disorders (70%), haematological disorders (16.7%) and QTc prolongation (16.7%). Twenty patients discontinued the offending drug permanently. CONCLUSION: With close monitoring, introduction of new DR-TB regimens brought good early results, which encouraged wider programmatic implementation in Ethiopia.

CONTEXTE: La TB pharmacorésistante (DR-TB) reste une préoccupation de santé publique majeure. Les données des patients DR-TB de l'hôpital ALERT (All Africa Leprosy, Tuberculosis and Rehabilitation Training Centre, Addis Ababa, Ethiopie) qui ont reçu des protocoles contenant de la bédaquiline et/ou du délamanide ont été analysées. RÉSULTATS: Des 51 patients DR-TB ont été enrôlés de 2017 à 2019, 90 ont eu une conversion de culture à 6 mois, 77% ont été guéris, 30 ont eu des effets secondaires, les plus fréquents étant des troubles gastro-intestinaux (70%), des troubles hématologique (16,7%) et un allongement de QTc (16,7%). Vingt patients ont définitivement arrêté le médicament incriminé. CONCLUSION: Moyennant une surveillance étroite, l'introduction de nouveaux protocoles DR-TB a eu de bons résultats précoces qui encouragent une mise en œuvre programmatique plus large en Ethiopie.

No universal access to drug-resistant tuberculosis care without engaging all health care providers.

Should the engagement of all health care providers in all aspects of programmatic management of drug-resistant tuberculosis (PMDT) become a priority in the national strategic plans for tuberculosis (TB), progress towards universal access to diagnosis, treatment and care of drug-resistant tuberculosis (DR-TB) would accelerate. This would be especially crucial in countries where the private sector is a significant provider of health services. Proven successful interventions to engage all health care providers and partners in the cascade of prevention, diagnosis, treatment and care of DR-TB patients need to be urgently scaled up. Such engagement should not be limited to the diagnosis and treatment of DR-TB, but extended also to all the aspects of PMDT, including approaches ensuring that patient-centred care, social support, pharmacovigilance and surveillance. Integral to the End TB Strategy, PMDT should be embedded in all public-private mix initiatives for TB and vice versa.

Could repeated prevalence surveys lead to decreasing tuberculosis prevalence in a community?

SETTING: Tiruvallur District, South India, where one baseline tuberculosis (TB) disease prevalence survey followed by three repeat prevalence surveys were conducted every 2.5 years between 1999 and 2008, and where the DOTS strategy was implemented in 1999. OBJECTIVE: To rule out the possibility that the observed decline in TB prevalence was influenced by conducting repeat prevalence surveys, we compared the findings from two surveys: the third repeat survey conducted in 2006-2008 and an independent single survey in a neighbouring area conducted in 2008-2009. DESIGN: An independent survey was conducted to estimate the prevalence of TB in the same district in 2008-2009 using a different set of villages and employing repeat survey methodology. The independent survey findings were compared with those of the third repeat survey. RESULTS: The estimated prevalence rate of culture- and smear-positive TB was respectively 401 per 100,000 and 186 per 100,000 population in the third repeat survey area. The corresponding rates were 340 and 184/100,000 in the independent survey area. The difference in prevalence was not significant (culture P = 0.09; smear P = 0.93). CONCLUSION: The estimated prevalence rates in the two different sample survey areas were comparable, indicating that the repeated prevalence surveys in the study area did not influence the observed decline in TB disease prevalence.

Trends in the prevalence of pulmonary tuberculosis over a period of seven and half years in a rural community in south India with DOTS.

SETTING: Tiruvallur district In Tamil Nadu where DOTS was implemented by the State Government as the tuberculosis control measure in 1999, and monitored by the National Institute for Research in Tuberculosis for over five years. OBJECTIVE: To estimate trends in TB prevalence in a rural community with DOTS. DESIGN: Surveys of pulmonary tuberculosis were undertaken in representative samples of subjects aged > or =15 years (N = 83,000 - 92,000), initially and after two and half, five and seven and half years of implementation of DOTS. Sputa were collected from those with abnormal radiograph and/or presence of chest symptoms, and examined by direct smear and culture. RESULTS: The prevalence of culture-positive tuberculosis was 607, 454, 309 and 388 per 100,000 in the four surveys, and that of smear-positive tuberculosis was 326, 259, 168 and 180. In the first five years; annual decrease was 12.4% (95% CI 10.4 - 14.4%) for culture-positive tuberculosis, and 12.2% (95% CI 8.0-16.2) for smear-positive tuberculosis. This was, however, followed by a significant increase in the next two and half years. The average new smear-positive case-notification rate was 75 per 100,000 during first four years but declined to 49 in subsequent years. There were no methodological differences during this period and information on changes in socio-economic indicators and nutritional standards was unavailable. CONCLUSION: Despite the average annual success rate (78%) in this tuberculosis unit being lower than the expected rate of 85%, the implementation of DOTS was followed by a substantial decrease in the prevalence of pulmonary tuberculosis over the seven and half year period. Our findings suggest that sustaining the high effectiveness of DOTS programme needs vigilant supervision.

Improving screening and chemoprophylaxis among child contacts in India's RNTCP: a pilot study.

BACKGROUND: While contact screening and chemoprophylaxis is recommended by India's Revised National Tuberculosis Control Programme for asymptomatic children aged <6 years who are household contacts of smear-positive pulmonary tuberculosis (PTB) patients, implementation is suboptimal. OBJECTIVE: To evaluate the effectiveness of an isoniazid preventive therapy (IPT) register and card in improving the adherence of health care workers (HCWs) to programmatic guidelines. METHODOLOGY: This prospective study was conducted in two Tuberculosis Units in South India. Child contacts of smear-positive PTB patients initiated on treatment between November 2009 and January 2010 were screened, and IPT was initiated in asymptomatic children. HCWs were trained in the use of the IPT register and card. The process was evaluated using patient and HCW interviews. RESULTS: Of 87 children identified aged <6 years, 71 (82%) were traced by HCWs; 53 were screened for TB and initiated on IPT, and 39 completed treatment. HCWs expressed satisfaction with the use of the IPT card and register, saying that it helped them to remember to complete required tasks. CONCLUSION: In a programme setting, with HCW training and introduction of specific documentation (IPT card and register), implementation of contact tracing and chemoprophylaxis for child contacts improved from 19% to 61%.

WHO guidelines for the programmatic management of drug-resistant tuberculosis: 2011 update.

The production of guidelines for the management of drug-resistant tuberculosis (TB) fits the mandate of the World Health Organization (WHO) to support countries in the reinforcement of patient care. WHO commissioned external reviews to summarise evidence on priority questions regarding case-finding, treatment regimens for multidrug-resistant TB (MDR-TB), monitoring the response to MDR-TB treatment, and models of care. A multidisciplinary expert panel used the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach to develop recommendations. The recommendations support the wider use of rapid drug susceptibility testing for isoniazid and rifampicin or rifampicin alone using molecular techniques. Monitoring by sputum culture is important for early detection of failure during treatment. Regimens lasting ≥ 20 months and containing pyrazinamide, a fluoroquinolone, a second-line injectable drug, ethionamide (or prothionamide), and either cycloserine or p-aminosalicylic acid are recommended. The guidelines promote the early use of antiretroviral agents for TB patients with HIV on second-line drug regimens. Systems that primarily employ ambulatory models of care are recommended over others based mainly on hospitalisation. Scientific and medical associations should promote the recommendations among practitioners and public health decision makers involved in MDR-TB care. Controlled trials are needed to improve the quality of existing evidence, particularly on the optimal composition and duration of MDR-TB treatment regimens.

Worries about memory loss and knowledge on Alzheimers disease in community-dwelling elderly from Brazil / Influências das características sociodemográficas no conhecimento sobre doença de Alzheimer numa população de idosos da cidade de Santos

Alzheimers disease (AD) is the most common cause of dementia in the elderly. Efforts to determine risk factors for the development of AD are important for risk stratification and early diagnosis. Furthermore, there are no standardized practices for memory screening. Lack of knowledge on AD, perception of memory loss as part of normal aging, and poor socioeconomic conditions may also be implicated in the current situation of dementia. Objective: To evaluate knowledge of AD in a literate population of elders and correlate these findings with sociodemographic characteristics. Methods: A descriptive survey design study enrolled 994 volunteers from September 2007 to May 2008 in the city of Santos, São Paulo, Brazil, to answer a brief questionnaire consisting of 8 simple questions about knowledge of AD and worries about memory loss. Results: Greater knowledge about AD was associated with eight or more years of education, female gender and age between 60 and 70 years. Also, 52.8% of responders (95% CI - 49.5-56.0%) answered that memory loss is part of normal aging and 77.5% (95% CI - 74.7-80.1%) had never sought a doctor to evaluate their memories. Conclusion: Our study results reinforced that the first line of preventing late diagnosis of dementia is to act in health promotion, especially by targeting subjects older than 70 years of male gender and with lower educational level. It also provided evidence that strategies to promote physician initiative in treating memory problems are also paramount.

A doença de Alzheimer (DA) é a causa mais comum de demência. Determinar os fatores de risco para o desenvolvimento da DA é importante na estratificação de risco e no diagnóstico precoce. Falta de conhecimento sobre a DA, percepção de perda de memória como parte do envelhecimento normal e más condições de socioeconômicas podem também estar implicadas. Objetivo: Avaliar o conhecimento sobre DA numa população alfabetizada de idosos e correlacionar esses achados com suas características sociodemográficas. Métodos: Este estudo descritivo envolveu 994 voluntários de Setembro de 2007 a Maio de 2008 na cidade de Santos, São Paulo, Brasil. Eles se dispuseram a responder um questionário simples composto de 8 questões sobre o conhecimento da DA e preocupações com a perda de memória. Resultados: Um maior conhecimento sobre DA foi associado à escolaridade >8 anos de estudo, ao gênero feminino e a idade entre 60 e 70 anos. Além disso, 52,8% dos respondedores (IC 95% - 49,5-56,0%) disseram que perda de memória faz parte do envelhecimento normal e 77,5% (IC 95% - 74,7-80,1%) relataram que nunca haviam procurado um médico para avaliação de memória. Conclusão: Nosso estudo reforça o fato de que a primeira linha de prevenção do diagnóstico tardio de demência é a promoção da saúde, especialmente tendo em foco indivíduos maiores de 70 anos, gênero masculino e maior escolaridade, nossa população de mais alto risco. Também traz evidências de que estratégias para promover a iniciativa dos médicos no cuidado aos problemas de memória são de grande importância.

A cost-benefit analysis of scaling up tuberculosis control in India.

OBJECTIVES: To measure the economic costs and benefits of scaling up tuberculosis (TB) control under the Revised National Tuberculosis Control Programme (RNTCP) in India. DESIGN: Modelling based on country-level programme and epidemiological data from 1997 to 2006. RESULTS: The scale-up of TB control in India has resulted in a total health benefit of 29.2 million disability-adjusted life years (DALYs), including 1.3 million deaths averted. In 2006, the burden of TB measured in terms of DALYs lost would have been 1.8 times higher in the absence of the programme. The total gain in economic well-being from TB control is estimated at US$88.1 billion over the 1997-2006 10-year period. Total public expenditure on TB control over this period amounted to US$768 million, with the RNTCP accounting for US$299 million and other health sector costs accounting for US$469 million. The cost of TB control averaged just US$26 per DALY gained over 1997-2006 and generated a return of US$115 per dollar spent. CONCLUSIONS: The scale-up of TB control has been a very cost-effective strategy for improving the health status of India's population, while the return on investment has been exceptional from a societal perspective.

Intensified scale-up of public-private mix: a systems approach to tuberculosis care and control in India.

SETTING: India's Revised National Tuberculosis Control Programme (RNTCP) implemented an intensified scale-up of public-private mix (PPM) DOTS covering 50 million population in 14 major cities. OBJECTIVES: To describe the processes and outcomes of the systems approach adopted. METHODS: National schemes for engagement with different providers were applied. Additional human resources were provided to assist with implementation. All health care providers were mapped, a concise training module and advocacy kit were developed, and sensitisation and training activities were conducted. National advocacy efforts complemented local initiatives. Data were captured in a PPM-focused surveillance system. RESULTS: Intensified PPM resulted in a 12% increase in notification of new smear-positive pulmonary TB cases. Contribution to case notification by providers varied widely: health department 67%, medical colleges 16%, private practitioners 6%, non-government organisations 7%, and the rest 4%. Treatment success was above the 85% target for all sectors combined. Strong public sector implementation and differentiation of roles and responsibilities among providers played major roles. The lessons learnt have been used by the RNTCP to inform future policy development. CONCLUSION: The systems approach to the intensified PPM scale-up used in the 14 cities was productive. However, many challenges and barriers to scale-up of PPM DOTS in India remain.

Tuberculosis 'retreatment others': profile and treatment outcomes in the state of Andhra Pradesh, India.

SETTING: The Government of India's Revised National Tuberculosis Control Programme (RNTCP), Andhra Pradesh, South India. OBJECTIVES: To study the basic characteristics and treatment outcomes of tuberculosis (TB) patients classified as 'retreatment others' and compare their treatment outcomes with smear-positive retreatment TB cases (relapse, failure, and treatment after default [TAD]). DESIGN: Retrospective record and report review of a patient cohort (n = 1237) registered as 'retreatment others' under the RNTCP from July to September 2008. RESULTS: Of 1009 patient records of 'retreatment others' reviewed, 674 (67%) were males, 892 (88%) were aged 15-64 years, 847 (84%) were pulmonary sputum smear-negative, 843 (84%) had unknown human immunodeficiency virus (HIV) status and 55 (5.5%) were HIV-positive. All patients were treated with the RNTCP intermittent (thrice weekly) retreatment regimen. Eighty per cent were successfully treated (cured plus treatment completed). Successful outcomes were higher in females (84%), in patients with extra-pulmonary TB (87%) and in HIV-negative patients (87%). The treatment outcomes were significantly better for 'retreatment others' (P < 0.05) than among the sputum smear-positive retreatment cases (78% for relapses, 59% for failures and 73% for TAD). CONCLUSIONS: 'Retreatment others' were predominantly sputum smear-negative TB, with significantly better treatment outcomes than among smear-positive retreatment patients. Future studies may assess the accuracy of the diagnoses and factors contributing to the occurrence of 'retreatment others'.

Worries about memory loss and knowledge on Alzheimer's disease in community-dwelling elderly from Brazil.

Alzheimer's disease (AD) is the most common cause of dementia in the elderly. Efforts to determine risk factors for the development of AD are important for risk stratification and early diagnosis. Furthermore, there are no standardized practices for memory screening. Lack of knowledge on AD, perception of memory loss as part of normal aging, and poor socioeconomic conditions may also be implicated in the current situation of dementia. OBJECTIVE: To evaluate knowledge of AD in a literate population of elders and correlate these findings with sociodemographic characteristics. METHODS: A descriptive survey design study enrolled 994 volunteers from September 2007 to May 2008 in the city of Santos, São Paulo, Brazil, to answer a brief questionnaire consisting of 8 simple questions about knowledge of AD and worries about memory loss. RESULTS: Greater knowledge about AD was associated with eight or more years of education, female gender and age between 60 and 70 years. Also, 52.8% of responders (95% CI - 49.5-56.0%) answered that memory loss is part of normal aging and 77.5% (95% CI - 74.7-80.1%) had never sought a doctor to evaluate their memories. CONCLUSION: Our study results reinforced that the first line of preventing late diagnosis of dementia is to act in health promotion, especially by targeting subjects older than 70 years of male gender and with lower educational level. It also provided evidence that strategies to promote physician initiative in treating memory problems are also paramount.

A doença de Alzheimer (DA) é a causa mais comum de demência. Determinar os fatores de risco para o desenvolvimento da DA é importante na estratificação de risco e no diagnóstico precoce. Falta de conhecimento sobre a DA, percepção de perda de memória como parte do envelhecimento normal e más condições de socioeconômicas podem também estar implicadas. OBJETIVO: Avaliar o conhecimento sobre DA numa população alfabetizada de idosos e correlacionar esses achados com suas características sociodemográficas. MÉTODOS: Este estudo descritivo envolveu 994 voluntários de Setembro de 2007 a Maio de 2008 na cidade de Santos, São Paulo, Brasil. Eles se dispuseram a responder um questionário simples composto de 8 questões sobre o conhecimento da DA e preocupações com a perda de memória. RESULTADOS: Um maior conhecimento sobre DA foi associado à escolaridade >8 anos de estudo, ao gênero feminino e a idade entre 60 e 70 anos. Além disso, 52,8% dos respondedores (IC 95% - 49,5-56,0%) disseram que perda de memória faz parte do envelhecimento normal e 77,5% (IC 95% - 74,7-80,1%) relataram que nunca haviam procurado um médico para avaliação de memória. CONCLUSÃO: Nosso estudo reforça o fato de que a primeira linha de prevenção do diagnóstico tardio de demência é a promoção da saúde, especialmente tendo em foco indivíduos maiores de 70 anos, gênero masculino e maior escolaridade, nossa população de mais alto risco. Também traz evidências de que estratégias para promover a iniciativa dos médicos no cuidado aos problemas de memória são de grande importância.

First- and second-line drug resistance patterns among previously treated tuberculosis patients in India.

Culture and drug susceptibility testing results of 2816 tuberculosis (TB) patients from across India who had failed repeated treatments from 2001 to 2004 were retrospectively analysed at the Tuberculosis Research Centre, Chennai. Of 1498 (53%) identified as having multidrug-resistant TB (MDR-TB), 671 (44.8%) were resistant to > or =1 second-line drugs (SLDs): 490 (32.7%) to ethionamide, 245 (16.4%) to ofloxacin and 169 (11.3%) to kanamycin; 69 (4.6%) were extensively drug-resistant TB (XDR-TB). Although from a highly select and non-representative patient group, such high SLD resistance levels, including XDR-TB, among MDR-TB patients is of concern. The prevention of MDR/XDR-TB through quality DOTS services, however, remains the priority. In addition, rapid scale-up of quality programmatic management under the RNTCP is needed, with more control and rational use of SLDs outside the programme.

Contact screening and chemoprophylaxis in India's Revised Tuberculosis Control Programme: a situational analysis.

BACKGROUND: India's Revised National Tuberculosis Control Programme (RNTCP) recommends screening of all household contacts of smear-positive pulmonary tuberculosis (PTB) cases for tuberculosis (TB) disease, and 6-month isoniazid preventive therapy (IPT) for asymptomatic children aged <6 years. OBJECTIVE: To assess the implementation of child contact screening and IPT administration under the RNTCP. METHODS: A cross-sectional study conducted in four randomly selected TB units (TUs), two in an urban (Chennai City) and two in a rural (Vellore District) area of Tamil Nadu, South India, from July to September 2008. The study involved the perusal of TB treatment cards of source cases (new or retreatment smear-positive PTB patients started on treatment), interview of source cases and focus group discussions (FGDs) among health care workers. RESULTS: Interviews of 253 PTB patients revealed that of 220 contacts aged <14 years, only 31 (14%) had been screened for TB, and that of 84 household children aged <6 years, only 16 (19%) had been initiated on IPT. The treatment cards of source cases lacked documentation of contact details. FGDs revealed greater TB awareness among urban health care workers, but a lack of detailed knowledge about procedures. CONCLUSION: Provision for documentation using a separate IPT card and focused training may help improve the implementation of contact screening and IPT.

Surveillance of drug-resistant tuberculosis in the state of Gujarat, India.

BACKGROUND: Limited information about the prevalence of drug-resistant tuberculosis (TB) has been reported from India, the country with the world's highest burden of TB. We conducted a representative state-wide survey in the state of Gujarat (2005 population: 56 million). METHODS: Mycobacterium tuberculosis isolates from a representative sample of new and previously treated smear-positive pulmonary TB (PTB) cases were subjected to drug susceptibility testing (DST) against first-line drugs at a World Health Organization supranational reference laboratory. Isolates found to have at least both isoniazid (INH) and rifampicin (RMP) resistance (i.e., multidrug-resistant TB [MDR-TB]) were subjected to second-line DST. RESULTS: Of 1571 isolates from new patients, 1236 (78.7%) were susceptible to all first-line drugs, 173 (11%) had any INH resistance and MDR-TB was found in 37 (2.4%, 95%CI 1.6-3.1). Of 1047 isolates from previously treated patients, 564 (54%) were susceptible to all first-line drugs, 387 (37%) had any INH resistance and MDR-TB was found in 182 (17.4%, 95%CI 15.0-19.7%). Among 216 MDR-TB isolates, 52 (24%) were ofloxacin (OFX) resistant; seven cases of extensively drug-resistant TB (XDR-TB) were found, all of whom were previously treated cases. CONCLUSION: MDR-TB prevalence remains low among new TB patients in Gujarat, but is more common among previously treated patients. Among MDR-TB isolates, the alarmingly high prevalence of OFX resistance may threaten the success of the expanding efforts to treat and control MDR-TB.

Economic evaluation of public-private mix for tuberculosis care and control, India. Part I. Socio-economic profile and costs among tuberculosis patients.

SETTING: Bangalore City, India. OBJECTIVES: To assess the socio-economic profile, health-seeking behaviour and costs related to tuberculosis (TB) diagnosis and treatment among patients treated under the Revised National TB Control Programme (RNTCP). DESIGN: All 1106 new TB patients registered for treatment under the RNTCP in the second quarter of 2005 participated. Interviews at the beginning and at the end of treatment were conducted. A convenience sample of 32 patients treated outside the RNTCP also participated. RESULTS: Among the TB patients, respectively 50% and 39% were from low and middle standard of living (SL) households, and 77% were from households with a per capita income of less than US$1 per day. The first health contact was with a private practitioner in the case of >70% of patients. Mean patient delay was low, at 21 days, but the mean health system delay was 52 days. The average cost incurred by patients before treatment in the RNTCP was US$145, and during treatment it was US$21. Costs as a proportion of annual household income per capita were 53% for people from low SL households and 41% for those from other households. Costs during treatment faced by patients treated outside the RNTCP averaged US$127. CONCLUSION: Patients treated under the RNTCP through a public-private mix approach were predominantly poor. Many of them experienced considerable health expenditures before starting treatment. Additional efforts are required to reduce the delays and the number of health care providers consulted, and to ensure that patients are shifted to subsidised treatment within the RNTCP.

Economic evaluation of public-private mix for tuberculosis care and control, India. Part II. Cost and cost-effectiveness.

SETTING: Bangalore City, India. OBJECTIVES: To assess the cost and cost-effectiveness of public-private mix (PPM) for tuberculosis (TB) care and control when implemented on a large scale. DESIGN: DOTS implementation under the Revised National TB Control Programme (RNTCP) began in 1999, PPM was introduced in mid-2001 and a second phase of intensified PPM began in 2003. Data on the costs and effects of TB treatment from 1999 to 2005 were collected and used to compare the two distinct phases of PPM with a scenario of no PPM. Costs were assessed in 2005 $US for public and private providers, patients and patient attendants. Sources of data included expenditure records, medical records, interviews with staff and patient surveys. Effectiveness was measured as the number of cases successfully treated. RESULTS: When PPM was implemented, total provider costs increased in proportion to the number of successfully treated TB cases. The average cost per patient treated from the provider perspective when PPM was implemented was stable, at US$69, in the intensified phase compared with US$71 pre-PPM. PPM resulted in the shift of an estimated 7200 patients from non-DOTS to DOTS treatment over 5 years. PPM implementation substantially reduced costs to patients, such that the average societal cost per patient successfully treated fell from US$154 to US$132 in the 4 years following the initiation of PPM. CONCLUSION: Implementation of PPM on a large scale in an urban setting can be cost-effective, and considerably reduces the financial burden of TB for patients.

Initial default among diagnosed sputum smear-positive pulmonary tuberculosis patients in Andhra Pradesh, India.

BACKGROUND: Under the Indian Revised National TB Control Programme (RNTCP), smear-positive pulmonary tuberculosis (PTB) patients not confirmed as starting treatment are reported as 'initial defaulters'. SETTING: Twenty districts of Andhra Pradesh State, India. OBJECTIVE: To evaluate reasons for treatment non-initiation in smear-positive PTB patients diagnosed and reported as initial defaulters by the NTP. DESIGN: A cross-sectional survey conducted of all reported initial defaulters during the period July-September 2006. RESULTS: Of 1304 reported initial defaulters, 619 (47.5%) had been placed on treatment, having been incorrectly reported due to poor documentation of patients referred for treatment in the same district or whose treatment initiation was delayed until the subsequent quarter. Of the 685 (4.5% of the total diagnosed) who were confirmed initial defaulters, 350 (51%) were untraceable, 152 (22%) had died before treatment initiation, 38 (5.5%) were treated privately, 93 (13.5%) had other reasons (e.g., refusal of treatment, chronic case, etc.) and no data were available for 52 (8%). CONCLUSIONS: Nearly 5% of smear-positive PTB patients diagnosed in the study period were confirmed as not having initiated treatment under the RNCTP. Improvements in address recording may assist efforts to retrieve these patients for treatment. Additional evaluations are needed of improved counselling of TB suspects to prevent initial default, and of reasons for death before treatment initiation.

Diagnosis and treatment of tuberculosis in undocumented migrants in low- or intermediate-incidence countries.

SETTING: Countries with low or intermediate tuberculosis (TB) incidence. OBJECTIVES: 1) To gather information on individuals and TB patients who are undocumented migrants and their access to TB diagnostic and treatment services; 2)to discuss interventions to strengthen diagnosis and treatment and 3) to formulate recommendations on how to ensure adequate TB prevention and control. DESIGN: Questionnaires sent to members of the Working Group (WG) on Transborder Migration and TB, managers of national TB programmes and EuroTB correspondents; literature research and development of a paper by a writing committee through consultation. RESULTS: Undocumented migrants represent 5-30% of immigrants and 5-10% of TB cases. Most countries reported full access to diagnosis and treatment, but in practice there were limitations. Most countries also reported that they could and did deport cases who were on TB treatment. A variety of activities to ensure access were reported from different countries. CONCLUSION: The WG recommends that 1) health authorities and/or health staff should ensure easy access to low-threshold facilities where undocumented migrants who are TB suspects can be diagnosed and treated without giving their names and without fear of being reported to the police or migration officials. Health authorities should remind health staff that they have an obligation of confidentiality; 2) each country should ensure that undocumented migrants with TB are not deported until completion of treatment; and 3) authorities and non-governmental sectors should raise awareness among undocumented migrants about TB, emphasising that diagnosis and treatment should be free of charge and wholly independent of migratory status.