Risk Of Multidrug-resistant Tuberculosis Research Articles

Associations of residential greenness exposure and ambient air pollutants with newly-diagnosed drug-resistant tuberculosis cases.

Growing evidence has found the health protective effects of greenness exposure on tuberculosis (TB) and the impact of ambient air pollutants on TB drug-resistance. However, it remains unclear whether residential greenness is also beneficial to reduce TB drug-resistance, and whether air pollution modify the greenness-TB resistance relationship. We enrolled 5006 newly-diagnosed TB patients from Shandong, China, during 2014 to 2021. Normalized Difference Vegetation Index (NDVI) in 250m and 500m buffer around individuals' residential zone was used to assess greenness exposure. All patients were divided by quartiles of NDVI250-m and NDVI500-m (from low to high: Q1, Q2, Q3, Q4) respectively. Six logistic regression models (NDVI, NDVI + PM2.5/PM10/SO2/NO2/O3) were used to estimate the association of NDVI and TB drug-resistance when adjusting different air pollutants or not. All models were adjusted for age, gender, body mass index, complications, smoking, drinking, population density, nighttime light index, road density. Compared with participants in NDVI250-m Q1 and NDVI500-m Q1, other groups had lower rates of MDR-TB, PDR-TB, RFP-resistance, SM-resistance, RFP + SM resistance, INH + RFP + EMB + SM resistance. NDVI500-m reduced the risk of multidrug resistant tuberculosis (MDR-TB) and the adjusted odds ratio (aOR, 95% confidence interval, CI) compared with NDVI500-m Q1 were 0.736 (0.547-0.991) in NDVI + PM10 model, 0.733 (0.544-0.986) in NDVI + PM2.5 model, 0.735(0.546-0.99) in NDVI + SO2 model, 0.736 (0.546-0.991) in NDVI + NO2 model, respectively, P < 0.05. NDVI500-m contributed to a decreased risk of streptomycin (SM)-resistance. The aOR of rifampicin (RFP) + SM resistance were 0.132 (NDVI250-m, Q4 vs Q1, 95% CI: 0.03-0.578), 0.199 (NDVI500-m, Q3 vs. Q1, 95% CI: 0.057-0.688) and 0.264 (NDVI500-m, Q4 vs. Q1, 95% CI: 0.087-0.799). The adjusted ORs (Q2 vs. Q1, 95% CI) of isoniazid (INH) + RFP + ethambutol (EMB) + SM resistance in 500m buffer were 0.276 (0.119-0.639) in NDVI model, 0.279 (0.11-0.705) in NDVI + PM10 model, 0.281 (0.111-0.713) in NDVI + PM2.5 model, 0.279 (0.11-0.709) in NDVI + SO2 model, 0.296 (0.117-0.754) in NDVI + NO2 model, 0.294 (0.116-0.748) in NDVI + O3 model, respectively. The study showed, for the first time, that residential greenness exposure in 500m buffer is beneficial for reducing newly-diagnosed DR-TB (including PDR-RB, MDR-TB, MR-TB), and ambient air pollutants may partially mediate this association.

Impact of Education on Non-Compliance and MDR TB Risk: Specialized Hospital Study

Background: Multidrug-resistant tuberculosis (MDR-TB) poses a significant global health threat, with treatment challenges linked to patient non-compliance. Education has been proposed as a potential strategy to improve adherence and reduce the risk of MDR-TB. This study aims to assess the impact of education on non-compliance and MDR-TB risk among patients receiving treatment at a specialized hospital. Objective: The primary objective of this retrospective cross-sectional study was to determine whether education provided to MDR-TB patients could reduce non-compliance rates and subsequently mitigate the risk of MDR-TB. Methods: The study included 50 MDR-TB patients who had received at least three months of treatment. Data were collected from the MDR-TB wards at the National Institute of Disease of the Chest and Hospital in Dhaka, spanning from October 2011 to March 2012. Patient education interventions focused on treatment adherence and MDR-TB prevention. Results: The study's findings demonstrate a substantial decrease in non-compliance rates Among MDR-TB patients, 64% had a history of non-compliance, with 72% being male and primarily having lower educational backgrounds. Conversely, 70% of drug-compliant patients had attained at least a secondary education level. Educational interventions led to a significant 20% reduction in non-compliance, from an initial 28% to a final 8%, emphasizing their potential to reduce MDR-TB risk. Conclusion: This study demonstrates the positive impact of education on reducing non-compliance among MDR-TB patients. A 20% reduction in non-compliance rates indicates that educational interventions can effectively contribute to decreasing the risk of MDR-TB. Future efforts should prioritize integrating education into MDR-TB treatment programs to enhance patient adherence and reduce the burden of MDR-TB.

Addressing patients' unmet needs related to multidrug-resistant tuberculosis (MDR-TB) care: A qualitative research study from Pune city, India.

We aimed to identify and describe the unmet needs of patients with multidrug-resistant tuberculosis (MDR-TB). As a part of larger cross-sectional mixed-methods (qualitative and quantitative data) study on pathways to MDR-TB care, here we present the qualitative component. We interviewed 128 (56 men and 72 women) individuals who had MDR-TB, aged > = 15 years, registered and treated under the National TB Elimination Program (NTEP) in Pune city of India. We carried out thematic analysis of participants' narratives. We found that delays in diagnosis, lack of counseling, late referral to the NTEP and unwarranted expenditure were the main barriers to care that study participants experienced in the private sector. Provider dismissal of symptoms, non-courteous behavior, lack of hygiene in the referral centers, forced stay with other patients and lack of support for psychological/psychiatric problems were identified as a few additional challenges that participants faced at the NTEP care centers. Using qualitative data from experiences of participants with MDR-TB, we identify patients' several unmet needs, attention to which can improve MDR-TB care. Educating private providers about MDR-TB risk and available rapid molecular assays can help the timely diagnosis of MDR-TB and reduce patients' out of pocket costs. At the RNTCP/NTEP, measures such as training health workers to build rapport with patients, maintaining hygienic environments in the health centers with adequate isolation of participants with MDR from other serious cases, referral of patients with psychiatric symptoms to mental health specialists and monitoring drug shortages can help in improving care delivery.

A systematic review and meta-analysis on the correlation between HIV infection and multidrug-resistance tuberculosis

BackgroundThe emergence of multidrug-resistant tuberculosis (MDR-TB) in HIV-positive people poses a significant challenge to international efforts to eradicate tuberculosis (TB). Many studies found conflicting results when examining the correlation between HIV and MDR-TB. The purpose of the present investigation was to comprehensively review the literature on the association between HIV infection and MDR-TB in order to evaluate the impact of HIV on MDR-TB worldwide. MethodsUtilizing the databases PubMed, Scopus, Google Scholar, and ScienceDirect, studies published between January 2000 and March 2023 that are eligible for meta-analysis were selected. Using the random-effects model, the aggregated odds ratio of the empirical relationship between HIV and MDR-TB was calculated, along with a confidence interval ranging from 0 to 95 %. Examining the asymmetry of the funnel plot and utilizing Egger's and Begg's test, the possibility of publication bias was investigated. The extent of heterogeneity was determined using the I2 statistics. ResultsThrough a database search, we identified 1214 studies, from which we ultimately selected 15 studies involving 9667 patients. The odds ratio of 2.78 (95 % confidence interval: 1.07–7.20) between HIV/AIDS and MDR-TB indicates a significant positive correlation. Tau 2 = 3.46, chi 2 = 1440.46, df = 14, I2 = 99.0 %, z = 2.10, and p 0.05 indicate that there is substantial heterogeneity among pooled studies. Since I2 is 99 % (>50 %), a random effect model was employed. The percentage of multidrug-resistant HIV-positive patients across all included studies follows a normal distribution, as shown by a Box and whisker plot with a symmetric skewness and a mesokurtic tail and a scatter plot with a significant R2 value below 1 [R2 = 0.2476] showed the positive correlation between multidrug resistance and HIV infection. ConclusionHIV infection increases MDR-TB risk, and the preceding pooled analysis showed an increased risk trend. Thus, MDR-TB, especially in HIV-positive patients, requires early case detection, quality-assured bacteriology diagnosis, and an effective infection control program.

Prevalence and risk factors of multidrug-resistant tuberculosis in Jazan, Saudi Arabia

Abstract Background Drug-resistant tuberculosis (DR-TB) is a global challenge. Owing to its high annual mortality and morbidity rates, as stated in the annual global TB reports provided by WHO, the prevalence of multidrug-resistant tuberculosis (MDR-TB) or rifampicin-resistant tuberculosis was shown to be increasing worldwide in 2021. Patients with tuberculosis from 2018 to 2022 represented ~40 million individuals, including 1.5 million with DR-TB. The study’s goal was to identify MDR-TB prevalence and risk factors in Jazan, Saudi Arabia. Patients and methods The research was done on 114 patients diagnosed with pulmonary TB in Jazan Chest Hospital from January to April, 2019. Demographic data were collected. Monteux test, chest radiograph, sputum smear, and Lowenstein–Jensen culture were performed for all patients with pulmonary TB. Patients were allocated in either group A, with 103 (90.4%) patients, if they had Mycobacterium tuberculosis-susceptible isolates, or in group B, with 11 (9.7%) patients, if they had M. tuberculosis-resistant isolates. Results The observed overall DR-TB prevalence was 9.7%. The proportion of MDR isolates was 7%, polyresistant isolate TB was 0.9%, rifampicin-resistant tuberculosis was 0.9%, and ethambutol-resistant TB was 0.9%. Females were more in group B (54.5%) than in group A (26.2%). Unmarried patients were higher in group A (60.2%) than in group B (29.3%). Comorbidities had significant values in the drug-resistant groups (90.9%). Conclusion The study showed that screening and treatment of DR-TB are crucial for the control of TB in Jazan and Saudi Arabia as a whole.

Risk for multidrug-resistant tuberculosis in patients treated with anti-tumor necrosis factor agents.

There are few studies on medical conditions associated with the development of drug-resistant TB. We investigated the risk factors for the occurrence of multidrug-resistant (MDR) tuberculosis (TB) in patients with pulmonary TB. Based on claims data from the Health Insurance Review and Assessment service in South Korea, we retrospectively investigated patients aged 18 years or older with active pulmonary TB who were treated with anti-TB therapy between January 1, 2008, and February 28, 2021. Among 248,176 patients with pulmonary TB who underwent anti-TB therapy, 2.0% were identified as having MDR-TB. MDR-TB showed male predominance compared to patients without MDR-TB, and patients with MDR-TB were younger. The risk for MDR-TB in patients treated with anti-TB therapy was 3.26 times higher in patients who received anti-tumor necrosis factor (TNF) agents before prescription of anti-TB medications than in those who had never been exposed to anti-TNF agents after adjusting for other TB risk factors (age, sex, inhaled corticosteroid, diabetes mellitus, liver disease, pneumoconiosis, and organ or blood recipients). The risk for MDR-TB was also increased in males and younger patients. Treatment with an anti-TNF agent could be a driver of MDR-TB in patients with pulmonary TB.

Determinan Faktor Terjadinya Multidrug Resistant pada Pengobatan TB Paru (MDR-TB) di Rumah Sakit Umum Daerah dr. Zainoel Abidin

Cases of multidrug resistant tuberculosis (MDR-TB) continue to increase. MDR-TB is the biggest problem in the prevention and eradication of TB, this is thought to have something to do with characteristics, environment, behavior and other disease factors. This study will examine the determinants of MDR-TB in RSUDZA Banda Aceh because it is a referral hospital for MDR-TB examination and treatment in Aceh Province. This type of research is analytic observational with case control design. The population is MDR-TB patients who seek treatment at RSUZA in 2018 as many as 37 people. By using a ratio of 1:1, the number of samples is 74 people consisting of 37 cases and 37 people as controls. Data collection was carried out from 20 to 30 August 2019 using questionnaires and observations. Data analysis used logistic regression test using the Stata program. The results showed that the variables that had significant values ​​were as follows: occupation with the occurrence of MDR-TB (P value = 0.036; OR = 5.6 95%CI: 1.12-28.1), smoking with the occurrence of MDR-TB (P value = 0.034; OR = 2.8, 95% CI: 95% CI: 1.07-7.52), side effects with the occurrence of MDR-TB (P value = 0.006; OR = 5.6, 95% CI: 1.64-1920) and history of diabetes with the occurrence of MDR-TB (P value = 0.001; OR = 4.9, 95% CI: 1.85-13.42). The results of the multivariate analysis obtained a history of DM (OR = 9; 95% CI: 2.53-37.47), (p = 0.0001) meaning that respondents who had a history of DM tended to be 9 times more at risk for MDR-TB compared to other variables. . The Aceh Health Office needs to improve the discovery of MDR-TB cases by conducting gene-expert examinations on TB patients suspected of having MDR-TB.

The profile of drug resistance of Mycobacterium tuberculosis and clinical features of extrapulmonary resistant tuberculosis among children living in Lviv region, Ukraine

Pediatric tuberculosis (TB) is a serious infectious disease that affects many children worldwide and is more likely to be extrapulmonary than adult TB. The purpose - to analyze the profile of drug resistance of Mycobacterium tuberculosis and clinical features of extrapulmonary resistant (EPR) TB among children from Lviv region, Ukraine. Materials and methods. We analyzed all cases of EPR TB (n=23) and extrapulmonary sensitive (EPS) TB (n=24) among 478 medical charts of children, who were hospitalized in the Lviv Anti-TB hospital during 2013-2020. Results. It was found out that EPR TB was diagnosed significantly more often at the age of 1 year and up to 3 years old than EPS TB and significantly less often - among children aged 4-7 years. The children with EPR TB were significantly more likely to live in rural areas and they were significantly more likely to be from families with less than 2 children, compared to EPS TB. The children with EPR TB were more often diagnosed with meningeal and central nervous system (CNS) TB, less often - with TB of the bones and joints, only they had TB of the intestine, compared to EPS TB. Miliary pulmonary TB and the predominance of bilateral process were more common at EPR TB. Among children with EPR TB, rifampicin-resistant TB was significantly more common found than the risk of multidrug-resistant TB (MDR-TB) and monoresistant TB. The resistance profile of MDR-TB showed that 17.4% are resistant to the combination of HR (H-isoniazid, R-rifampicin), 8.6% - to HRES (E-ethambutol, S-streptomycin), 4.3% - to НRS. Among 43.5% of children with EPR TB the contact with a TB patient was not established. At the same time, only a third of children who had came into contact with bacterial exсretors were under dispensary observation and only about 9% received chemoprophylaxis. Conclusions. In order to prevent the development of EPR TB, it is necessary to improve TB prevention measures among the most vulnerable segments of the population. The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of all participating institutions. The informed consent of the patient was obtained for conducting the studies. No conflict of interests was declared by the authors.

Moving towards collaborative care in combating the burgeoning burden of tuberculosis and diabetes: key findings from a pharmaceutical care study

Diabetes mellitus is one of the most common comorbidities in tuberculosis patients with prevalence as high as 15-30% in Malaysia. The convergence of these two diseases is linked to poorer tuberculosis treatment outcomes, increased chances of relapse and recurrence within two years, increased risk of multi drug resistant-tuberculosis, reactivation of latent tuberculosis infection and higher risk of death during tuberculosis treatment. It is imperative to have a collaborative effort from all stakeholders including pharmacists in order to establish a coordinated response to both diseases. This paper reports key findings of a mixed-method pharmaceutical care study that tackled many medication-related problems in patients with both tuberculosis and diabetes. Despite the need to address the barriers and challenges encountered during the provision of pharmaceutical care, pharmacists played an important role in promoting diabetes management in a tuberculosis clinic, and the integration of pharmacists within a multidisciplinary health care team was indeed feasible.

English

BACKGROUND Pulmonary tuberculosis (PTB) still remains a global public health problem. Diabetes along with poor glycaemic control leads to an immune compromised state. Type 2 diabetes (DM) is a strong risk factor for tuberculosis (TB) and is associated with a slower response to TB treatment and a higher mortality rate. Objective of the study was to determine the prevalence of rifampicin resistance in pulmonary tuberculosis in patients with DM. METHODS The study was conducted in General Medicine Department, Dr. B.R. Ambedkar Medical College, Bengaluru, Karnataka, from July 2018 to December 2019. Sputum was collected from a total of 100 patients who were sputum smear positive for acid fast bacilli (AFB). Sample was collected and was subjected to GeneXpert testing for the evaluation of resistance against rifampicin. RESULTS In our study the incidence of rifampicin resistance was 45.16 % in diabetes and 5.79 % in non-diabetes which was statistically significant ( 2 -1.1; p-0.01) between rifampicin resistance and diabetic patients’ status with active TB in South Karnataka, India. This result supports previous research showing a higher multidrug-resistant tuberculosis risk in tuberculosis &amp; diabetes patients relative to those with no diabetes. Additionally, correlation of other findings between type 2 diabetes &amp; multidrug-resistant tuberculosis as well as delayed time to sputum smear conversion were confirmed. CONCLUSIONS The results showed correlation between diabetes &amp; rifampicin resistance and probably suggest the necessity of integrated diabetes and tuberculosis surveillance programs in South Karnataka, India. KEYWORDS Rifampicin, Tuberculosis, Diabetes Mellitus

Incidence Density and Predictors of Multidrug-Resistant Tuberculosis Among Individuals With Previous Tuberculosis History: A 15-Year Retrospective Cohort Study.

Background: To date, too little attention has been paid to monitoring and estimating the risk of incident multidrug-resistant tuberculosis (MDR-TB) among individuals with a previous tuberculosis history (PTBH). The purpose of this study was to assess the incidence of and risk factors for MDR-TB in those individuals.Methods: Between 2005 and 2020, a large, retrospective, population-based cohort study was performed in Hangzhou, China. A multivariable Cox regression model was used to evaluate independent predictors of incident MDR-TB among individuals with PTBH.Results: The incidence density of MDR-TB was 22.6 per 1,000 person-years (95% confidence level and an interval of 20.9–24.3) for individuals with PTBH. The incidence of MDR-TB increased significantly in individuals who• were under 60 years old.• were male.• had a history of direct contact.• came from low-income families.• worked in high-risk occupations.• lived in rural areas.• had a retreatment TB history.• had an unfavorable outcome in their previous treatment (P < 0.05).In addition, we found that the following factors were significantly linked to the MDR-TB risk among individuals with PTBH (P < 0.05):• sociodemographic factors such as the 21–30 and 31–40 year age groups, or a history of direct contact.• clinical factors like passive modes of TB case finding (PMTCF), human immunodeficiency virus infection, unfavorable treatment outcomes, retreated TB history, non-standardized treatment regimens of retreatment TB patients, and duration of pulmonary cavities (DPC).• microbiological factors, such as duration of positive sputum culture.We also found that the 21–30 year age group, low family income, and PMTCF were significantly linked to incident MDR-TB only in males with PTBH, whilst the 41–50 year age group, extended treatment course, and DPC were significantly associated with female MDR-TB only.Conclusion: The incidence of MDR-TB was high, with a higher rate among subjects with a history of direct contact and unfavorable treatment outcomes. There was a gender difference in the incidence density and risk factors of MDR-TB among individuals with PTBH. Long-term monitoring and gender-specific risk-factor modifications should be given to individuals with PTBH.

82125 Multiple epidemics of multidrug-resistant tuberculosis revealed by spatial disease mapping and whole-genome sequencing analysis in urban China

ABSTRACT IMPACT: Our study will integrate state-of-the-art methods in pathogen genomics, epidemiology, and geospatial analysis to identify both host- and pathogen-factors driving the MDR-TB transmission and the study outcome can inform the design of targeted interventions OBJECTIVES/GOALS: The emergence of multidrug-resistant tuberculosis (MDR-TB) poses serious challenges for the global eradication of tuberculosis. Recent research has shown that transmission is now the dominant driver of MDR-TB. However, our limited understanding of where and among whom MDR-TB is transmitted hampers efforts to control person-to-person spread. METHODS/STUDY POPULATION: We used several analytic approaches to characterize the dynamics of MDR-TB transmission in Shanghai, China. We identified all culture-confirmed MDR cases between 2009-2016 in the city and 1) estimated individual-level risk factors for MDR disease; 2) mapped the TB cases by their home addresses and used a Bayesian spatial disease mapping method to identify regions with an elevated risk of MDR-TB; and 3) we sequenced all MDR isolates to understand whether transmission explained variance in risk that was not attributable to the distribution of individual or location-specific risk variates. RESULTS/ANTICIPATED RESULTS: There were 1034 MDR-TB cases among 16,315 culture-confirmed TB cases during the study period. Bayesian disease mapping identified spatial heterogeneity of MDR-TB and determined four hotspots with an elevated risk of MDR-TB, none of which were fully explained by individual or regional-covariates (Figure 1). Sequencing revealed that more than 40% of the MDR-TB strains were in genomic clusters, indicating recent MDR-TB transmission. Most importantly, MDR-TB cases in three of the four large clades (&gt;8 isolates) were spatially concentrated in three strain-specific hotspots (Figure 2). DISCUSSION/SIGNIFICANCE OF FINDINGS: With the combination of traditional epidemiological tools, geographical, and genomic methods, this study revealed multiple loci of transmission of specific MDR-TB clades within a single city. Identification of where and among whom MDR-TB is transmitted can inform the design of targeted interventions.

Impact of different tuberculosis history at the onset of future multidrug-resistant tuberculosis: A large, retrospective, population-based cohort study

ObjectivesThe impact of tuberculosis (TB) history on the risk of multidrug-resistant tuberculosis (MDR-TB) is not yet fully understood. We aimed to identify the impact of different TB history at the onset of future MDR-TB. MethodsA large, retrospective, population-based cohort study was performed between 2005 and 2019. A multivariable Cox model was used to evaluate independent risk factors for MDR-TB for individuals with different previous TB history (PTBH), such as newly diagnosed TB history (NDTH) and re-treated TB history (RTH). ResultsOverall, 12 172 individuals with PTBH were included in this study. The main impacts of different PTBH at the onset of future MDR-TB were as follows: (a) low family income, high-risk occupation, TB patients with severe infection, extended or shortened treatment course, 2H3R3Z3E3/4H3R3 and frequency of sputum culture were significantly linked to incident MDR-TB only in individuals with NDTH (P < 0.05); (b) passive mode of TB case finding, individualised treatment regimens, 3HRZES/6HRE, duration of pulmonary cavities, excellent frequency of chest X-ray examination and duration of negative sputum smear were significantly associated with incident MDR-TB only in individuals with RTH (P < 0.05); (c) age <60 years, history of direct contact, human immunodeficiency virus (HIV) infection, unsuccessful treatment and duration of positive sputum culture were related to incident MDR-TB in both categories of PTBH individuals (P < 0.05). ConclusionEarly and differential surveillances, assessments and interventions for reducing the risk of MDR-TB among individuals with different PTBH play a key role.

Nomogram for individualized prediction of incident multidrug-resistant tuberculosis after completing pulmonary tuberculosis treatment

The purposes of this study were to construct a comprehensive nomogram for providing a simple, precise and personalized prediction of incident multidrug-resistant tuberculosis (MDR-TB) after completing pulmonary tuberculosis treatment (CPTBT). A matched case–control study (1:2 ratios) was performed between 2005 and 2018. A multivariable Cox regression analysis was used to evaluate independent predictors of incident MDR-TB after the CPTBT. A comprehensive nomogram was developed based on the multivariable Cox model. Overall, 1, 836 participants were included in this study. We developed and validated a simple-to-use nomogram that predicted the individualized risk of incident MDR-TB by using 10 parameters after the CPTBT. The concordance index of this nomogram was 0.833 [95% confidence interval (CI) 0.807–0.859] and 0.871 (95% CI 0.773–0.969) for the training and validation sets, respectively, which indicated adequate discriminatory power. The calibration curves for the risk of incident MDR-TB showed an optimal agreement between nomogram prediction and actual observation in the training and validation sets, respectively. The high sensitivity and specificity of nomogram was indicated by using a receiver operating characteristic curve analysis. Through this clinic tool, TB control executives could more precisely monitor, estimate and intervene the risk of incident MDR-TB among individuals with CPTBT.

Characterization of katG, inhA, rpoB and pncA in Mycobacterium tuberculosis isolates from MDR-TB risk patients in Thailand.

Multidrug-resistant tuberculosis (MDR-TB) is commonly found in Thailand especially in the public health region 5, the Western region of Thailand. This study's aim was to characterize katG, inhA, rpoB and pncA genes in Mycobacterium tuberculosis. One hundred strains of Mycobacterium tuberculosis (MTB) were isolated from sputum samples of MDR-TB risk patients in the laboratory of the Office of Disease Prevention and Control 5th Ratchaburi province, Thailand from January to December 2015. Drug susceptibility testing (DST) was performed using a BACTEC MGIT 960 system. Furthermore, the genes katG, inhA, rpoB and pncA were characterized by DNA sequencing. Of a total of 100 MTB samples which underwent drug susceptibility testing, 42% showed isoniazid (INH) and rifampicin (RIF) resistance, and a further 25% showed INH mono-resistance (25%). The most common gene mutations found using DNA sequencing were katG_Ser315Thr (70%), rpoB_Ser531leu (81%) and pncA_Ile31Thr (84%). The common mutation of pncA_Ile31Thr substitution was detected in 26 of 91 (29%) pyrazinamide (PZA) susceptible isolates. Using DNA sequencing to screen for gene mutations conferring drug resistance may be feasible and use less time than using DST to detect resistance patterns.

Increasing Burden of Multidrug Resistant Tuberculosis in HIV Infected Individuals: A Systematic Review and Meta-Analysis

Background: The increasing burden of multidrug-resistant tuberculosis (MDR-TB) in HIV infected individuals is a serious threat to global tuberculosis control programs. The study aimed to summarize the available evidences on the association of HIV infection and the development of MDR-TB and, finally, to provide an up-to-datepooled estimate of risks. Methods: We searched on PubMed, Google Scholar, and ScienceDirect databases to select eligible studies for our systematic review and meta-analysis, published between January 1, 2010, and July 30,2019. Two sets of reviewers independently extracted data and assessed the methodological quality of the studies using the Newcastle-Ottawa Scale. Subgroup analysis was pre-specified to perform according to the continent, country, income level, study design, mean/median age, and type of MDR-TB. The random-effects model was used to obtain the pooled odds ratio of the crude association between HIV infection and MDR-TB with a 95% confidence interval. We investigated the potential publication bias by checking funnel plot asymmetry and using the Egger’s test. Moreover, we assessed the heterogeneity using Cochran’s Q test and the I2 statistic. Findings: We identified 1496 studies through a database search, and after subsequent elimination based on our eligibility criteria, we selected 47 articles, including 60,754 participants. The pooled odds ratio was 1.47 (95% CI= 1.19-1.81) with substantial heterogeneity (I2=80.49%), and there was no evidence of publication bias (p=0.13). Subgroup analysis revealed that the estimated pooled odds ratio for European countries (OR=2.31, 95% CI= 1.80-2.96, I2=32.26%) was higher than the other three continents (South American, Asia, and Africa). Further analysis showed that the effect estimate was higher for primary MDR-TB (OR=3.13, 95% CI= 1.59-6.13, I2=13.13%) with no heterogeneity among the studies. There was also a trend towards increased risk of MDR-TB for HIV patients of 40 years and older (OR=1.96, 95% CI= 1.41-2.73, I2=69.11%) and women HIV patients (OR=1.97, 95% CI 1.03-3.78, I2=80.35%). The MDR-TB is found to be significant in high burden of TB/HIV countries (OR=1.51, 95% CI= 1.18-1.92, I2=78.1%) and in high-income countries (OR=2.64, 95% CI= 2.01-3.48, I2=15.01%). Interpretation:The risk of MDR-TB increases significantly among HIV infected individuals from the last decade. The most considerable burden of MDR-TB in HIV individuals was found in Europe and the women HIV patients with age 40 years and older are most in the risk of MDR-TB. Funding Statement: The authors stated: There was a student seed fund for this study. The corresponding author had full access to all study data and the authorized person for the final submission of the paper for publication. Declaration of Interests: The authors declare no competing interests. Ethics Approval Statement: The protocol was registered with PROSPERO-CRD42019132752.

Multidrug-resistant tuberculosis risk factors assessment with intuitionistic fuzzy cognitive maps

Multidrug-resistant tuberculosis risk factors assessment with intuitionistic fuzzy cognitive maps

The Effect of Non-Compliance with Medication on Multidrug Resistant of Tuberculosis

Background: Resistant Tubercu­losis (MDR-TB) is the biggest problem in the prevention and eradication of in the world. MDR exists in 27 countries where there are at least 6,800 MDR cases every year and 12% of new cases registered are MDR TB. MDR-TB is a disease caused by resistant Myco­bacterium This study aims to exa­mine the effect of non-compliance with taking medication on the incidence of multidrug resistant tuberculosis (MDR TB). Subjects and Method: The problems of this study with PICO are as follows: Population= patients, Intervention = Non-compliance with taking medication. Comparison= Adherence to taking medication, and Outcome= Incidence of Resistant Tuberculosis. Meta- analy­sis was carried out by systematically reviewing articles from Google Scholar, Pubmed and Springer Link. The articles used in this research are articles that have been published from 2010-2019. The keywords to look for articles are as follows: Risk Factor MDR TB OR Pre­vious Treatment AND Multidrug resistant tuberculosis. The inclusion criteria used were full paper, used English, case control study design and the results reported were adjusted odds ratio. Articles were collected using the PRISMA diagram and analyzed using the Review Manager 5.3 application with a fixed effect model. Results: A total of nine articles reviewed in this study came from Bangladesh, Malaysia, Pakistan and Ethiopia. This resulted in a study showing that the effect of incomplete treatment increased the risk of multidrug resistant tuber­culosis (aOR= 10.04; 95% CI= 8.90 to 11.32; p <0.001). Conclusion: The effect of incomplete treat­ment increases the risk of multidrug resistant tuberculosis in Taiwan, Bangladesh, Malaysia and Ethiopia. Keyword s : Effect of incomplete treatment, resistant tuberculosis (MDR TB) Correspondence: Widya Kurnianingsih. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57125, Central Java. Email: widyakurnianingsih08@gmail.com. Mo­bile: 081556837033. Journal of Epidemiology and Public Health (2020), 05(04): 393-401 https://doi.org/10.26911/jepublichealth.2020.05.04.06

The relevance of household contacts tracing among child contacts of patients with multidrug-resistant tuberculosis

BACKGROUND. The World Health Organization (WHO) reports an unknown contact history of pediatric tuberculosis (TB), especially in children younger than 5 years old. Tracing pediatric household contacts of patients with multidrug-resistant TB (MDR-TB) is considered to be a highly effective intervention for detection of new cases of chemoresistant TB in children and timely prevention of its transmission. OBJECTIVE. To study the nature of TB process manifestations and concordance of mycobacterium tuberculosis (MBT) drug resistance profiles in household child contacts of patients with MDR-TB. MATERIALS AND METHODS. The nature of TB process manifestations and concordance of MBT drug resistance profiles in 12 household child contacts of patients with MDR-TB in 6 households (6 adult MDR-TB index patients, IP) were studied. Adults and children were examined and treated in the Pulmonary Tuberculosis Department No 3 and in the Pediatric Department of the Clinical Base of the Department of Phthisiology and Pulmonology of Zaporizhzhia State Medical University at the Municipal Institution “Zaporizhzhia Regional Tuberculosis Clinical Dispensary”. RESULTS AND DISCUSSION. The tracing of children who were household contacts of the MDR-TB IP revealed the following features. The incidence of child TB was 2 times higher than that of contact adults (44 % vs. 20 %). Moreover, the incidence among children younger than 2 years of age was almost 3 times higher than in children across other age groups (54.5 % vs. 18.2 % in children younger than 5 years of age and 18.2 % in children aged 5 years and older). The children were non-BCG vaccinated in 63.6 % of cases. There was an alarmingly high rate of non-BCG vaccinated children, namely 83.3 % among individuals younger than 2 years of age and all of those younger than 5 years of age (100 %). The children mostly presented small clinical forms of non-destructive TB: intrathoracic lymph node TB (36.4 %), MBT complex (36.4 %) and focal TB (18.2 %). Most of the children (63.6 %) who developed TB were detected within the first year of IP with MDR-TB follow-up, and it is worthy of note that in the majority of cases (4 households; 66.6 %). With respect to the concordance of MBT drug resistance profiles between the children and MDR-TB IP in the households, diagnosis in children was microbiologically confirmed in only 3 cases (3 households) demonstrating the complete concordance of profiles in each one. At the same time, the complete concordance of MBT drug resistance profiles between adult household contacts and the MDR-TB IP was also recorded in 3 cases. As is evident, across the household contacts group aged between 0 and 18 years who were exposed to the MDR-TB IP, the most susceptible to develop TB were non-BCG vaccinated children younger than 2 years. More worryingly is that among 3 microbiologically conformed individuals of this age group, 2 children younger than 2 years were found to have their own drug resistant MTB isolates. CONCLUSIONS. Tracing household child contacts of MDR-TB IP is particularly effective for timely detection of active TB within the first year of MDR-TB IP follow-up. Non-BCG vaccinated children younger than 2 years of age are at the highest risk for MDR-TB followed by non-BCG vaccinated children younger than 5 years of age. The early detection and timely antimycobacterial therapy initiation based on drug susceptibility test results of a MDR-TB IP is a guarantee not only for an effective treatment but also for a reduction in the MDR-TB transmission to other persons.

Urban-rural disparities in treatment outcomes among recurrent TB cases in Southern Province, Zambia

BackgroundAt least 13–20% of all Tuberculosis (TB) cases are recurrent TB. Recurrent TB has critical public health importance because recurrent TB patients have high risk of Multi-Drug Resistant TB (MDR-TB). It is critical to understand variations in the prevalence and treatment outcomes of recurrent TB between different geographical settings.The objective of our study was to estimate the prevalence of recurrent TB among TB cases and compare risk of unfavorable treatment outcomes between rural and urban settings.MethodsIn a retrospective cohort study conducted in southern province of Zambia, we used mixed effects logistic regression to asses associations between explanatory and outcome variables. Primary outcome was all-cause mortality and exposure was setting (rural/urban). Data was abstracted from the facility TB registers.ResultsOverall 3566 recurrent TB cases were diagnosed among 25,533 TB patients. The prevalence of recurrent TB was 15.3% (95% CI: 14.8 15.9) in urban and 11.3% (95% CI: 10.7 12.0) in rural areas. Death occurred in 197 (5.5%), 103 (2.9%) were lost to follow-up, and 113 (3.2%) failed treatment. Rural settings had 70% higher risk of death (adjusted OR: 1.7; 95% CI: 1.2 2.7). Risk of lost to follow-up was twice higher in rural than urban (adjusted OR: 2.0 95% CI: 1.3 3.0). Compared to HIV-uninfected, HIV-infected individuals on Antiretroviral Treatment (ART) were 70% more likely to die (adjusted OR: 1.7; 95% CI: 1.2 3.1).ConclusionRecurrent TB prevalence was generally high in both urban and rural settings. The risk of mortality and lost to follow-up was higher among rural patients. We recommend a well-organized Directly Observed Therapy strategy adapted to setting where heightened TB control activities are focused on areas with poor treatment outcomes.