Estimation of tuberculosis incidence at subnational level using three methods to monitor progress towards ending TB in India, 2015-2020.

OBJECTIVES: We verified subnational (state/union territory (UT)/district) claims of achievements in reducing tuberculosis (TB) incidence in 2020 compared with 2015, in India. DESIGN: A community-based survey, analysis of programme data and anti-TB drug sales and utilisation data. SETTING: National TB Elimination Program and private TB treatment settings in 73 districts that had filed a claim to the Central TB Division of India for progress towards TB-free status. PARTICIPANTS: Each district was divided into survey units (SU) and one village/ward was randomly selected from each SU. All household members in the selected village were interviewed. Sputum from participants with a history of anti-TB therapy (ATT), those currently experiencing chest symptoms or on ATT were tested using Xpert/Rif/TrueNat. The survey continued until 30 Mycobacterium tuberculosis cases were identified in a district. OUTCOME MEASURES: We calculated a direct estimate of TB incidence based on incident cases identified in the survey. We calculated an under-reporting factor by matching these cases within the TB notification system. The TB notification adjusted for this factor was the estimate by the indirect method. We also calculated TB incidence from drug sale data in the private sector and drug utilisation data in the public sector. We compared the three estimates of TB incidence in 2020 with TB incidence in 2015. RESULTS: The estimated direct incidence ranged from 19 (Purba Medinipur, West Bengal) to 1457 (Jaintia Hills, Meghalaya) per 100 000 population. Indirect estimates of incidence ranged between 19 (Diu, Dadra and Nagar Haveli) and 788 (Dumka, Jharkhand) per 100 000 population. The incidence using drug sale data ranged from 19 per 100 000 population in Diu, Dadra and Nagar Haveli to 651 per 100 000 population in Centenary, Maharashtra. CONCLUSION: TB incidence in 1 state, 2 UTs and 35 districts had declined by at least 20% since 2015. Two districts in India were declared TB free in 2020.

Evaluation of TB Case Finding through Systematic Contact Investigation, Chhattisgarh, India.

Rationale. Contact investigation is an established tool for early case detection of tuberculosis (TB). In India, contact investigation is not often conducted, despite national policy, and the yield of contact investigation is not well described. Objective. To determine the yield of evaluating household contacts of sputum smear-positive TB cases in Rajnandgaon district, Chhattisgarh, India. Methods. Among 14 public health care facilities with sputum smear microscopy services, home visits were conducted to identify household contacts of all registered sputum smear-positive TB cases. We used a standardized protocol to screen for clinical symptoms suggestive of active TB with additional referral for chest radiograph and sputa collection. Results. From December 2010 to May 2011, 1,556 household contacts of 312 sputum smear-positive TB cases were identified, of which 148 (9.5%) were symptomatic. Among these, 109 (73.6%) were evaluated by sputum examination resulting in 11 cases (10.1%) of sputum smear-positive TB and 4 cases (3.6%) of smear-negative TB. Household visits contributed additional 63% TB cases compared to passive case detection alone. Conclusion. A standard procedure for conducting household contact investigation identified additional TB cases in the community and offered an opportunity to initiate isoniazid chemoprophylaxis among children.

Innovative social protection mechanism for alleviating catastrophic expenses on multidrug-resistant tuberculosis patients in Chhattisgarh, India.

BACKGROUND: Patients with multidrug-resistant tuberculosis (MDR-TB) incur huge expenditures for diagnosis and treatment; these costs can be reduced through a well-designed and implemented social health insurance mechanism. The State of Chhattisgarh in India successfully established a partnership between the Revised National TB Control Programme (RNTCP) and the Health Insurance Programme, to form a universal health insurance scheme for all, by establishing Rashtriya Swasthya Bima Yojna (RSBY) and Mukhyamantri Swasthya Bima Yojana (MSBY) MDR-TB packages. The objective of this partnership was to absorb the catastrophic expenses incurred by patients with MDR-TB, from diagnosis to treatment completion, in the public and private sector. This paper documents the initial experience of a tailor-made health insurance programme, linked to covering catastrophic health expenditure for patients with MDR-TB. METHODS: In this descriptive study, data on uptake of insurance claims through innovative MDR-TB packages from January 2013 to April 2014 were collected. A simple survey of costs for clinical investigation and inpatient care was conducted across two major urban districts in Chhattisgarh. In these selected districts, three health facilities from the private sector and one medical college from the public sector with a functional drug-resistant tuberculosis (DR-TB) centre were chosen by the RSBY and MSBY State Nodal Agency to complete a simple, structured questionnaire on existing market rates. The mean costs for clinical investigations and hospital stay were calculated for an individual patient with MDR-TB who would seek services from the private or public sector. RESULTS: A total of 207 insurance claims for RSBY and MSBY MDR-TB packages were processed, of which 20 were from private and 187 from public health establishments, covered under the health insurance programme, free of charge. An estimated catastrophic expenditure, of approximately US$ 20 000, was saved through the RSBY and MSBY health insurance mechanism during the study period. CONCLUSION: The innovative RSBY and MSBY MDR-TB insurance package is a step towards reducing catastrophic expenses associated with treatment for MDR-TB.

Comparing same day sputum microscopy with conventional sputum microscopy for the diagnosis of tuberculosis--Chhattisgarh, India.

BACKGROUND: The World Health Organization (WHO) recommends same day sputum microscopy (spot-spot) in preference to conventional strategy (spot-morning) for the diagnosis of smear positive tuberculosis with the view that completing diagnosis on a single day may be more convenient to the patients and reduce pre-treatment losses to follow-up. METHODS: We conducted a cross-sectional study in seven selected district level hospitals of Chhattisgarh State, India. During October 2012 - March 2013, two sputum specimens (spot-early morning) were collected from consecutively enrolled adult (≥ 18 years) presumptive TB patients as per current national guidelines. In addition, a second sample was collected (one hour after the collection of first spot sample) from the same patients. All the samples were examined by ziehl-Neelsen (ZN) microscopy. McNemar's test was used to compare statistical differences in the proportion smear positive between the two approaches (spot-spot versus spot-morning). RESULTS: Of 2551 presumptive TB patients, 69% were male. All patients provided the first spot specimen, 2361 (93%) provided the second spot specimen, and 2435 (96%) provided an early morning specimen. 72% of specimens were mucopurulent in conventional strategy as compared to 60% in same day strategy. The proportion of smear-positive patients diagnosed by same day microscopy was 14%, as compared to 17% by the conventional method (p<0.001). A total of 73 (16.9%) potential cases were missed by the same day method compared to only 2 (0.5%) by the conventional method. CONCLUSION: Same-day microscopy method missed 17% of smear-positive cases and contrary to prior perception, did not increase the proportion of suspects providing the second sample. These findings call for an urgent need to revisit the WHO recommendation of switching to same-day diagnosis over the current policy.

Can follow-up examination of tuberculosis patients be simplified? A study in Chhattisgarh, India.

BACKGROUND: Each follow-up during the course of tuberculosis treatment currently requires two sputum examinations. However, the incremental yield of the second sputum sample during follow-up of different types of tuberculosis patients has never been determined precisely. OBJECTIVES: To assess the incremental yield of the second sputum sample in the follow-up of tuberculosis patients under the Revised National Tuberculosis Control Programme (RNTCP) in Chhattisgarh, India. METHODOLOGY: A record review of tuberculosis (TB) patients registered in 2009 using a structured proforma from two sources, Tuberculosis and Laboratory Register, was undertaken in the six districts of Chhattisgarh, India. RESULTS: In smear positive cases, of 10,048 follow-up examinations, 45 (0.5%) were found to be smear positive only on the second sputum when the result of the first sample was negative. In smear negative pulmonary and extra pulmonary TB patients, of 6,206 follow-up smear examinations, 11(0.2%) were found to be smear positive. CONCLUSIONS: The incremental yield of a second smear examination was very low, indicating that examination of one sputum sample is enough during follow-up among TB patients. There is insufficient yield to support sputum smear microscopy for monitoring smear negative pulmonary TB and extra pulmonary TB patients. These results indicate that the follow-up smear microscopy can be substantially simplified with favourable resource implications.

Risk factors for non-communicable disease in urban Haryana: a study using the STEPS approach.

BACKGROUND: India is in the midst of an epidemiological transition with non-communicable diseases increasing in importance. Targeting the risk factors for non-communicable diseases is recognized as an essential preventive strategy. There is lack of good quality data on prevalence of risk factors. The present study addresses this challenge in urban population of Ballabgarh town in Faridabad district of Haryana. METHODS: A total of 1263 male and 1326 female respondents were selected using multistage systematic random sampling, in 5 age groups of 10 years (15-24, 25-34, 35-44, 45-54 and 55-64). The World Health Organization's STEPS approach entails stepwise collection of the risk factor data based on standardized questionnaires (step 1), basic physical measures in step 2 and finally in 3rd step, basic biochemical investigations such as blood sugar and cholesterol. The prevalence was adjusted to the age and sex strata of urban Faridabad as per census 2001. RESULTS: The prevalence of current daily use of smoked tobacco was 22.2% (95% CI7colon; 20.0-24.6) for males and 1.4% (95% CI: 0.9-2.2) for females. In males the prevalence of current alcohol consumption was 28.9% (95% CI: 26.4-31.5). Physical inactivity was reported by 23.2% (95% CI: 20.9-25.6) of males and 52.4% (95% CI: 49.7-55.1) of female respondents. Only 8.6% of males and 4.4% of females were consuming adequate portions of the fruits and vegetables. 23.1% (95% CI: 20.8-25.5) males and 15.7% (95% CI: 13.87ndash;17.8) females were either in Stage 1 and 2 hypertension (JNC VII) or were taking anti-hypertensives. Among males, 25.4% (95% CI: 23.0-27.9) and, among females 34.9% (95% CI: 32.3-37.6) were overweight. CONCLUSION: The prevalence of tobacco and alcohol use among males and physical inactivity among females was high. Low consumption of fruits and vegetables, hypertension and overweight was equally common among both the sexes in the population studied. Thus there is an urgent need for initiating measures at the risk factor level to counter this modern day epidemic of non-communicable disorders, within this urban community.