Last data update: Jan 13, 2025. (Total: 48570 publications since 2009)
Records 1-12 (of 12 Records) |
Query Trace: Volkmann T[original query] |
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SARS-CoV-2 seroprevalence and vaccine uptake among pregnant women at first antenatal care visits in Malawi
Tenthani L , Seffren V , Kabaghe AN , Ogollah F , Soko M , Yadav R , Kayigamba F , Payne D , Wadonda-Kabondo N , Kampira E , Volkmann T , Sugandhi NS , Seydel K , Rogier E , Thwing JI , Gutman JR . Am J Trop Med Hyg 2024 Many SARS-CoV-2 infections are asymptomatic, thus reported cases underestimate actual cases. To improve estimates, we conducted surveillance for SARS-CoV-2 seroprevalence among pregnant women attending their first antenatal care visit (ANC1) from June 2021 through May 2022. We administered a questionnaire to collect demographic, risk factors, and COVID-19 vaccine status information and tested dried blood spots for SARS-CoV-2 antibodies. Although <1% of ANC1 participants reported having had COVID-19, monthly SARS-CoV-2 seroprevalence increased from 15.4% (95% CI: 10.5-21.5) in June 2021 to 65.5% (95% CI: 55.5-73.7) in May 2022. Although COVID-19 vaccination was available in March 2021, uptake remained low, reaching a maximum of 9.5% (95% CI: 5.7-14.8) in May 2022. Results of ANC1 serosurveillance provided prevalence estimates helpful in understanding this population case burden that was available through self-report and national case reports. To improve vaccine uptake, efforts to address fears and misconceptions regarding COVID-19 vaccines are needed. |
Strengthening the WHO Regional Office for Africa (WHO AFRO) COVID-19 vaccination information system
Shragai T , Bukhari A , Atagbaza AO , Oyaole DR , Shah R , Volkmann K , Kamau L , Sheillah N , Farham B , Wong MK , Lam E , Mboussou F , Impouma B . BMJ Glob Health 2024 9 (1) This manuscript describes the process and impact of strengthening the WHO Regional Office for Africa (WHO AFRO)'s COVID-19 vaccination information system. This system plays a critical role in tracking vaccination coverage, guiding resource allocation and supporting vaccination campaign roll-out for countries in the African region. Recognising existing data management issues, including complex reporting prone to human error, compromised data quality and underutilisation of collected data, WHO AFRO introduced significant system improvements during the COVID-19 pandemic. These improvements include shifting from an Excel-based to an online Azure-based data collection system, automating data processing and validation, and expansion of collected data. These changes have led to improvements in data quality and quantity including a decrease in data non-validity, missingness, and record duplication, and expansion of data collection forms to include a greater number of data fields, offering a more comprehensive understanding of vaccination efforts. Finally, the creation of accessible information products-including an interactive public dashboard, a weekly data pack and a public monthly bulletin-has improved data use and reach to relevant partners. These resources provide crucial insights into the region's vaccination progress at national and subnational levels, thereby enabling data-driven decision-making to improve programme performance. Overall, the strengthening of the WHO AFRO COVID-19 vaccination information system can serve as a model for similar efforts in other WHO regions and contexts. The impact of system strengthening on data quality demonstrated here underscores the vital role of robust data collection, capacity building and management systems in achieving high-quality data on vaccine distribution and coverage. Continued investment in information systems is essential for effective and equitable public health efforts. |
Lessons learned from the implementation of HIV biological-behavioral surveys of key populations in the Caribbean
Volkmann T , Chase M , Lockard AM , Henningham D , Albalak R . AIDS Educ Prev 2018 30 (6) 528-541 In the Caribbean region, HIV prevalence is high among key population (KP) groups, such as sex workers and men who have sex with men. However, there is a lack of high-quality, population-level data estimating HIV prevalence and population sizes of KPs. The President's Emergency Plan for AIDS Relief has funded and completed five bio-behavioral surveillance (BBS) surveys using respondent-driven sampling methodology to target KP in the English-speaking Caribbean region. We describe the experience of implementing bio-behavioral surveys in the Caribbean region and document the context, processes, successes, and challenges, and make recommendations for future survey implementation. Successes include the provision of estimates of nationally representative HIV data and KP size estimates to improve HIV programming and provision of tools for routinization of BBS. Challenges include small KP sizes, the legal context, and the cost and speed of implementation. Future bio-behavioral surveys should include well-planned formative assessments and stakeholder involvement. |
Operational research within a Global Fund supported tuberculosis project in India: why, how and its contribution towards change in policy and practice
Sagili KD , Satyanarayana S , Chadha SS , Wilson NC , Kumar AMV , Moonan PK , Oeltmann JE , Chadha VK , Nagaraja SB , Ghosh S , Lo TQ , Volkmann T , Willis M , Shringarpure K , Reddy RC , Kumar P , Nair SA , Rao R , Yassin M , Mwangala P , Zachariah R , Tonsing J , Harries AD , Khaparde S . Glob Health Action 2018 11 (1) 1445467 BACKGROUND: The Global Fund encourages operational research (OR) in all its grants; however very few reports describe this aspect. In India, Project Axshya was supported by a Global Fund grant to improve the reach and visibility of the government Tuberculosis (TB) services among marginalised and vulnerable communities. OR was incorporated to build research capacity of professionals working with the national TB programme and to generate evidence to inform policies and practices. OBJECTIVES: To describe how Project Axshya facilitated building OR capacity within the country, helped in addressing several TB control priority research questions, documented project activities and their outcomes, and influenced policy and practice. METHODS: From September 2010 to September 2016, three key OR-related activities were implemented. First, practical output-oriented modular training courses were conducted (n = 3) to build research capacity of personnel involved in the TB programme, co-facilitated by The Union, in collaboration with the national TB programme, WHO country office and CDC, Atlanta. Second, two large-scale Knowledge, Attitude and Practice (KAP) surveys were conducted at baseline and mid-project to assess the changes pertaining to TB knowledge, attitudes and practices among the general population, TB patients and health care providers over the project period. Third, studies were conducted to describe the project's core activities and outcomes. RESULTS: In the training courses, 44 participant teams were supported to develop research protocols on topics of national priority, resulting in 28 peer-reviewed scientific publications. The KAP surveys and description of project activities resulted in 14 peer-reviewed publications. Of the published papers at least 12 have influenced change in policy or practice. CONCLUSIONS: OR within a Global Fund supported TB project has resulted in building OR capacity, facilitating research in areas of national priority and influencing policy and practice. We believe this experience will provide guidance for undertaking OR in Global Fund projects. |
Comparison of HIV testing among children and adults with tuberculosis, Vietnam
Volkmann T , Nguyen B , Anyalechi EG , Chapman Hedges KN , Van Anh H , Tue PQ , Nhung NV , Click ES . J Tuberc Res 2017 5 (4) 292-297 HIV testing among persons with tuberculosis (TB) results in high-yield identification of persons infected with HIV. To evaluate differences in HIV testing among children versus adults with TB in Vietnam, we collected and analyzed age-disaggregated facility and aggregated provincial data from the National Tuberculosis Program. HIV testing was incompletely documented for >70% of children, whereas adult testing data were >90% complete. Standardized training of personnel for universal HIV testing and documentation for children with TB could improve HIV case-detection and permit linking of children with HIV to antiretroviral treatment to prevent morbidity and mortality. |
Integration and decentralisation of TB-HIV services increases HIV testing of TB cases in Rajasthan, India
Sinha SK , Saxena A , Mishra V , Volkmann T , Kumar AMV , Nair SA , Moonan PK , Oeltmann JE , Chadha VK . Public Health Action 2017 7 (1) 71-73 The proportion of tuberculosis (TB) patients tested for the human immunodeficiency virus (HIV) in the state of Rajasthan, India, is limited by the availability of HIV testing facilities. Rajasthan implemented a policy of initiating TBHIV diagnosis at all health institutions in July 2013. The number of TB diagnostic facilities increased from 33 to 63 in Banswara District and from 22 to 68 in Jhunjhunu District, while the number of HIV testing facilities in these districts increased from 1 to 53 and from 10 to 81, respectively, after the policy implementation. The proportion of TB patients tested for HIV increased by respectively 27% and 19%. |
Pilot implementation of a contact tracing intervention for tuberculosis case detection in Kisumu County, Kenya
Volkmann T , Okelloh D , Agaya J , Cain K , Ooko B , Malika T , Burton D . Public Health Action 2016 6 (4) 217-219 Leveraging an existing community health strategy, a contact tracing intervention was piloted under routine programmatic conditions at three facilities in Kisumu County, Kenya. Data collected during a 6-month period were compared to existing programmatic data. After implementation of the intervention, we found enhanced programmatic contact tracing practices, noting an increase in the proportions of index cases traced, symptomatic contacts referred, referred contacts presenting to a facility for tuberculosis screening, and eligible contacts started on isoniazid preventive therapy. As contact tracing is scaled up, health ministries should consider the adoption of similar contact tracing interventions to improve contact tracing practices. |
Relationship between nutritional support and tuberculosis treatment outcomes in West Bengal, India
Samuel B , Volkmann T , Cornelius S , Mukhopadhay S , MejoJose , Mitra K , Kumar AM , Oeltmann JE , Parija S , Prabhakaran AO , Moonan PK , Chadha VK . J Tuberc Res 2016 4 (4) 213-219 INTRODUCTION: Poverty and poor nutrition are associated with the risk of developing tuberculosis (TB). Socioeconomic factors may interfere with anti-tuberculosis treatment compliance and its outcome. We examined whether providing nutritional support (monthly supply of rice and lentil beans) to TB patients who live below the poverty line was associated with TB treatment outcome. METHODS: This was a retrospective cohort study of sputum smear-positive pulmonary TB patients living below the poverty line (income of <$1.25 per day) registered for anti-tuberculosis treatment in two rural districts of West Bengal, India during 2012 to 2013. We compared treatment outcomes among patients who received nutritional support with those who did not. A log-binomial regression model was used to assess the relation between nutritional support and unsuccessful treatment outcome (loss-to-follow-up, treatment failure and death). RESULTS: Of 173 TB patients provided nutritional support, 15 (9%) had unsuccessful treatment outcomes, while 84 (21%) of the 400 not provided nutrition support had unsuccessful treatment outcomes (p < 0.001). After adjusting for age, sex and previous treatment, those who received nutritional support had a 50% reduced risk of unsuccessful treatment outcome than those who did not receive nutritional support (Relative Risk: 0.51; 95% Confidence Intervals: 0.30 - 0.86). CONCLUSION: Under programmatic conditions, monthly rations of rice and lentils were associated with lower risk of unsuccessful treatment outcome among impoverished TB patients. Given the relatively small financial commitment needed per patient ($10 per patient per month), the national TB programme should consider scaling up nutritional support among TB patients living below the poverty line. |
Disparities in tuberculosis treatment completion by incarceration status, U.S., 1999-2011
Mitruka K , Volkmann T , Pratt RH , Kammerer JS . Am J Prev Med 2016 52 (4) 483-490 INTRODUCTION: Treatment completion is the cornerstone of tuberculosis (TB) control strategy globally. Although the majority of reported TB cases in the U.S. have documented treatment completion, individuals diagnosed while incarcerated are less likely to have documentation of whether or not they completed treatment. This study assessed trends and correlates of no documented treatment completion among individuals incarcerated at diagnosis. METHODS: U.S. National TB Surveillance System (1999-2011) data on cases eligible for treatment completion were analyzed during 2014-2015. Treatment outcomes and trends in no documented completion were assessed by incarceration status. Multivariable logistic regression identified correlates of no documented completion among people incarcerated at diagnosis. RESULTS: A lower proportion of individuals incarcerated at diagnosis had documented TB treatment completion than non-incarcerated individuals (75.6% vs 93.7%), and a higher proportion were lost to follow-up (10.7% vs 2.2%) or moved (9.4% vs 2.3%) during treatment (p<0.001). The 1999-2011 trend in no documented completion significantly increased among those incarcerated at diagnosis and declined among non-incarcerated individuals. Being foreign born was the strongest correlate of no documented completion among people incarcerated at diagnosis (AOR=2.86, 95% CI= 2.35, 3.49). Social risk factors for TB (e.g., homelessness, substance abuse), although common among incarcerated individuals, did not emerge as correlates of no documented completion. CONCLUSIONS: People diagnosed with TB disease at U.S. correctional facilities, especially the foreign born, require enhanced strategies for documenting TB treatment completion. Strengthened collaboration between correctional and public health agencies could improve continuity of care among released inmates. |
Drug-induced hypothyroidism during anti-tuberculosis treatment of multidrug-resistant tuberculosis: Notes from the field
Munivenkatappa S , Anil S , Naik B , Volkmann T , Sagili KD , Akshatha JS , Buggi S , Sharada MA , Kulkarni S , Chadha VK , Moonan PK . J Tuberc Res 2016 4 (3) 105-110 We followed 188 euthyroidic persons undergoing treatment for multidrug resistant tuberculosis (MDR-TB) in the state of Karnataka, India to determine the incidence of hypothyroidism during anti-tuberculosis treatment. Overall, among MDR-TB patients with valid thyroid stimulating hormone (TSH) values, about 23% developed hypothyroidism (TSH value ≥10 mIU/ml) during anti-tuberculosis treatment; the majority (74%) occurring after 3 months of treatment. Among 133 patients who received a regimen that contained ethionamide, 42 (32%) developed hypothyroidism. Among 17 patients that received a regimen that contained para-aminosalicylate sodium, 6 (35%) developed hypothyroidism. Among 9 HIV positive patients on anti-retroviral treatment, 4 (44%) developed hypothyroidism. These results differ from previously reported 4% incidence of hypothyroidism amongst patients who passively reported thyroidal symptoms during treatment, suggesting routine serologic monitoring of TSH throughout the course of treatment for MDR-TB is warranted. |
Excess alcohol use and death among tuberculosis patients in the United States, 1997-2012
Volkmann T , Moonan PK , Miramontes R , Oeltmann JE . J Tuberc Res 2016 4 (1) 18-22 RATIONALE: Excess alcohol use (EAU) is associated with adverse TB treatment outcomes. OBJECTIVE: We investigated the relationship between EAU and death among TB patients 15 years and older prescribed anti-TB treatment in the United States. DESIGN: Using data reported to the National Tuberculosis Surveillance System for 1997-2012, we calculated adjusted odds ratios and excess attributable risk percent for death among TB patients with reported EAU. RESULTS: EAU was associated with death among patients younger than 65. The excess attributable risk percent for death among those with reported EAU for those younger than 65 was >35%. CONCLUSIONS: Interventions to reduce EAU in patients <65 years may reduce deaths. |
Tuberculosis and excess alcohol use in the United States, 1997-2012
Volkmann T , Moonan PK , Miramontes R , Oeltmann JE . Int J Tuberc Lung Dis 2015 19 (1) 111-9 BACKGROUND: Excess alcohol use among tuberculosis (TB) patients complicates TB control strategies. OBJECTIVES: To characterize the role of excess alcohol use in TB control, we describe the epidemiology of excess alcohol use and TB in the United States among those aged 15 years. DESIGN: Using data reported to the National Tuberculosis Surveillance System, 1997-2012, we examined associations between excess alcohol use and TB treatment outcomes and markers for increased transmission (involvement in a local genotype cluster of cases) using multivariate logistic regression. We used Cox proportional hazards regression analysis to examine the relationship between excess alcohol use and the rate of conversion from positive to negative in sputum culture results. RESULTS: Excess alcohol use was documented for 31 207 (15.1%) of 207 307 patients. Prevalence of excess alcohol use was greater among male patients (20.6%) and US-born patients (24.6%). Excess alcohol use was associated with a positive sputum smear result (aOR 1.23, 95%CI 1.18-1.28) and death during treatment (vs. completion of treatment) (aOR 1.16, 95%CI 1.10-1.22). The rate of culture conversion was higher among patients without excess alcohol use (adjusted hazard ratio 1.20, 95%CI 1.18-1.23). CONCLUSIONS: Excess alcohol use was common among patients with TB, and was associated with TB transmission, lower rates of sputum culture conversion, and greater mortality. |
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