Last data update: Jun 24, 2024. (Total: 47078 publications since 2009)
Records 1-13 (of 13 Records) |
Query Trace: Newby C [original query] |
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Correction: Testing and treatment for malaria elimination: a systematic review
Newby G , Cotter C , Roh ME , Harvard K , Bennett A , Hwang J , Chitnis N , Fine S , Stresman G , Chen I , Gosling R , Hsiang MS . Malar J 2024 23 (1) 63 |
Testing and treatment for malaria elimination: A systematic review
Newby G , Cotter C , Roh ME , Harvard K , Bennett A , Hwang J , Chitnis N , Fine S , Stresman G , Chen I , Gosling R , Hsiang MS . Malar J 2023 22 (1) 254 BACKGROUND: Global interest in malaria elimination has prompted research on active test and treat (TaT) strategies. METHODS: A systematic review and meta-analysis were conducted to assess the effectiveness of TaT strategies to reduce malaria transmission. RESULTS: A total of 72 empirical research and 24 modelling studies were identified, mainly focused on proactive mass TaT (MTaT) and reactive case detection (RACD) in higher and lower transmission settings, respectively. Ten intervention studies compared MTaT to no MTaT and the evidence for impact on malaria incidence was weak. No intervention studies compared RACD to no RACD. Compared to passive case detection (PCD) alone, PCD + RACD using standard diagnostics increased infection detection 52.7% and 11.3% in low and very low transmission settings, respectively. Using molecular methods increased this detection of infections by 1.4- and 1.1-fold, respectively. CONCLUSION: Results suggest MTaT is not effective for reducing transmission. By increasing case detection, surveillance data provided by RACD may indirectly reduce transmission by informing coordinated responses of intervention targeting. |
Replication and validation of a state-wide linkage method to estimate incidence proportion of child maltreatment
Newby-Kew A , Marshall LM , Zane S , Putz JW , Parrish J . Ann Epidemiol 2023 84 1-7 PURPOSE: To study familial factors associated with child maltreatment in a birth population, Alaska piloted a mixed-design method that linked child welfare data with the Pregnancy Risk Assessment Monitoring System (PRAMS). We replicated this approach in Oregon and validated it in both states. METHODS: We linked vital records, child welfare, and PRAMS data to create two 2009 birth cohorts for each state: one based on vital records (full birth cohort), and one on PRAMS (stratified random sample). For each cohort we estimated the incidence proportions (IP) of child maltreatment before age nine years and compared those estimated using PRAMS with those observed using the full birth cohort. RESULTS: The Oregon PRAMS cohort estimated that 28.7% (95% CI: 24.0, 33.4), 20.9% (17.1, 24.7), and 8.3% (6.0, 10.5) of children experienced an alleged, investigated, and substantiated maltreatment respectively, versus 32.0%, 25.0% and 9.9% from the birth cohort. The corresponding Alaska estimates were 29.1% (26.1, 32.0), 22.6% (19.9, 25.2), and 8.3% (6.7, 9.9) of children from the PRAMS cohort versus 29.1%, 23.5%, and 9.1% in the birth cohort. CONCLUSIONS: The incidence proportion of child maltreatment in two states was accurately estimated with PRAMS cohorts. Researchers can study a comprehensive set of factors that may influence child maltreatment by incorporating PRAMS into birth cohort linkages. |
Cardiopulmonary impact of particulate air pollution in high-risk populations: JACC State-of-the-Art Review
Newman JD , Bhatt DL , Rajagopalan S , Balmes JR , Brauer M , Breysse PN , Brown AGM , Carnethon MR , Cascio WE , Collman GW , Fine LJ , Hansel NN , Hernandez A , Hochman JS , Jerrett M , Joubert BR , Kaufman JD , Malik AO , Mensah GA , Newby DE , Peel JL , Siegel J , Siscovick D , Thompson BL , Zhang J , Brook RD . J Am Coll Cardiol 2020 76 (24) 2878-2894 Fine particulate air pollution <2.5 μm in diameter (PM(2.5)) is a major environmental threat to global public health. Multiple national and international medical and governmental organizations have recognized PM(2.5) as a risk factor for cardiopulmonary diseases. A growing body of evidence indicates that several personal-level approaches that reduce exposures to PM(2.5) can lead to improvements in health endpoints. Novel and forward-thinking strategies including randomized clinical trials are important to validate key aspects (e.g., feasibility, efficacy, health benefits, risks, burden, costs) of the various protective interventions, in particular among real-world susceptible and vulnerable populations. This paper summarizes the discussions and conclusions from an expert workshop, Reducing the Cardiopulmonary Impact of Particulate Matter Air Pollution in High Risk Populations, held on May 29 to 30, 2019, and convened by the National Institutes of Health, the U.S. Environmental Protection Agency, and the U.S. Centers for Disease Control and Prevention. |
Identifying and chronicling childhood lead poisoning prevention program achievements with "success stories"
Lockamy-Kassim E , Friedberg J , Newby C , Lecours C , Credle K , Leonard M . J Public Health Manag Pract 2019 25 S111-s114 Success stories showcase a public health program's progress toward achieving population health objectives. The Centers for Disease Control and Prevention's (CDC's) Childhood Lead Poisoning Prevention Program (CLPPP) develops "success stories" in partnership with state and local cooperative agreement recipients as one way to highlight lead poisoning prevention achievements. Success stories can be used to inform policy makers, stakeholders, and the general public. Over time, the process for collecting and developing CLPPP "successes" has evolved. Early efforts to collect success stories from funded recipients resulted in broad or unfocused reports that diminished the program's perceived impact. CDC's CLPPP revised the approach to success story development in order to better articulate the context, intervention or activity, and results related to programs' successes. The new approach results in stronger products ensuring that both CDC and program recipients can use the success stories to demonstrate achievement of key program objectives. We describe how success stories can be used to identify, chronicle, and mobilize public health program achievements using the example of lead poisoning prevention. Success stories allow programs to increase mission awareness, build stakeholder support, generate community interest, and collectively demonstrate progress toward meeting national program objectives. |
Framework for evaluating the health impact of the scale-up of malaria control interventions on all-cause child mortality in sub-Saharan Africa
Ye Y , Eisele TP , Eckert E , Korenromp E , Shah JA , Hershey CL , Ivanovich E , Newby H , Carvajal-Velez L , Lynch M , Komatsu R , Cibulskis RE , Moore Z , Bhattarai A . Am J Trop Med Hyg 2017 97 9-19 Concerted efforts from national and international partners have scaled up malaria control interventions, including insecticide-treated nets, indoor residual spraying, diagnostics, prompt and effective treatment of malaria cases, and intermittent preventive treatment during pregnancy in sub-Saharan Africa (SSA). This scale-up warrants an assessment of its health impact to guide future efforts and investments; however, measuring malaria-specific mortality and the overall impact of malaria control interventions remains challenging. In 2007, Roll Back Malaria's Monitoring and Evaluation Reference Group proposed a theoretical framework for evaluating the impact of full-coverage malaria control interventions on morbidity and mortality in high-burden SSA countries. Recently, several evaluations have contributed new ideas and lessons to strengthen this plausibility design. This paper harnesses that new evaluation experience to expand the framework, with additional features, such as stratification, to examine subgroups most likely to experience improvement if control programs are working; the use of a national platform framework; and analysis of complete birth histories from national household surveys. The refined framework has shown that, despite persisting data challenges, combining multiple sources of data, considering potential contributions from both fundamental and proximate contextual factors, and conducting subnational analyses allows identification of the plausible contributions of malaria control interventions on malaria morbidity and mortality. |
Strategies and approaches to vector control in nine malaria-eliminating countries: a cross-case study analysis
Smith Gueye C , Newby G , Gosling RD , Whittaker MA , Chandramohan D , Slutsker L , Tanner M . Malar J 2016 15 (1) 2 BACKGROUND: There has been progress towards malaria elimination in the last decade. In response, WHO launched the Global Technical Strategy (GTS), in which vector surveillance and control play important roles. Country experiences in the Eliminating Malaria Case Study Series were reviewed to identify success factors on the road to elimination using a cross-case study analytic approach. METHODS: Reports were included in the analysis if final English language draft reports or publications were available at the time of analysis (Bhutan, Cape Verde, Malaysia, Mauritius, Namibia, Philippines, Sri Lanka, Turkey, Turkmenistan). A conceptual framework for vector control in malaria elimination was developed, reviewed, formatted as a matrix, and case study data was extracted and entered into the matrix. A workshop was convened during which participants conducted reviews of the case studies and matrices and arrived at a consensus on the evidence and lessons. The framework was revised and a second round of data extraction, synthesis and summary of the case study reports was conducted. RESULTS: Countries implemented a range of vector control interventions. Most countries aligned with integrated vector management, however its impact was not well articulated. All programmes conducted entomological surveillance, but the response (i.e., stratification and targeting of interventions, outbreak forecasting and strategy) was limited or not described. Indoor residual spraying (IRS) was commonly used by countries. There were several examples of severe reductions or halting of IRS coverage and subsequent resurgence of malaria. Funding and operational constraints and poor implementation had roles. Bed nets were commonly used by most programmes; coverage and effectiveness were either not measured or not articulated. Larval control was an important intervention for several countries, preventing re-introduction, however coverage and impact on incidence were not described. Across all interventions, coverage indicators were incomparable, and the rationale for which tools were used and which were not used appeared to be a function of the availability of funding, operational issues and cost instead of evidence of effectiveness to reduce incidence. CONCLUSIONS: More work is required to fill gaps in programme guidance, clarify the best methods for choosing and targeting vector control interventions, and support to measure cost, cost-effectiveness and cost-benefit of vector surveillance and control interventions. |
Review of mass drug administration for malaria and its oerational challenges
Newby G , Hwang J , Koita K , Chen I , Greenwood B , von Seidlein L , Shanks GD , Slutsker LM , Kachur SP , Wegbreit J , Ippolito MM , Poirot E , Gosling R . Am J Trop Med Hyg 2015 93 (1) 125-134 Mass drug administration (MDA) was a component of many malaria programs during the eradication era, but later was seldomly deployed due to concerns regarding efficacy and feasibility, and fear of accelerating drug resistance. Recently, however, there has been renewed interest in the role of MDA as an elimination tool. Following a 2013 Cochrane Review that focused on the quantitative effects of malaria MDA, we have conducted a systematic, qualitative review of published, unpublished, and gray literature documenting past MDA experiences. We have also consulted with field experts, using their historical experience to provide an informed, contextual perspective on the role of MDA in malaria elimination. Substantial knowledge gaps remain and more research is necessary, particularly on optimal target population size, methods to improve coverage, and primaquine safety. Despite these gaps, MDA has been used successfully to control and eliminate Plasmodium falciparum and P. vivax malaria in the past, and should be considered as part of a comprehensive malaria elimination strategy in aspecific settings. |
The Global Nutrition Report 2014: actions and accountability to accelerate the world's progress on nutrition
Haddad L , Achadi E , Ag Bendech M , Ahuja A , Bhatia K , Bhutta Z , Blossner M , Borghi E , Colecraft E , de Onis M , Eriksen K , Fanzo J , Flores-Ayala R , Fracassi P , Kimani-Murage E , Nago Koukoubou E , Krasevec J , Newby H , Nugent R , Oenema S , Martin-Prevel Y , Randel J , Requejo J , Shyam T , Udomkesmalee E , Reddy KS . J Nutr 2015 145 (4) 663-71 In 2013, the Nutrition for Growth Summit called for a Global Nutrition Report (GNR) to strengthen accountability in nutrition so that progress in reducing malnutrition could be accelerated. This article summarizes the results of the first GNR. By focusing on undernutrition and overweight, the GNR puts malnutrition in a new light. Nearly every country in the world is affected by malnutrition, and multiple malnutrition burdens are the "new normal." Unfortunately, the world is off track to meet the 2025 World Health Assembly (WHA) targets for nutrition. Many countries are, however, making good progress on WHA indicators, providing inspiration and guidance for others. Beyond the WHA goals, nutrition needs to be more strongly represented in the Sustainable Development Goal (SDG) framework. At present, it is only explicitly mentioned in 1 of 169 SDG targets despite the many contributions improved nutritional status will make to their attainment. To achieve improvements in nutrition status, it is vital to scale up nutrition programs. We identify bottlenecks in the scale-up of nutrition-specific and nutrition-sensitive approaches and highlight actions to accelerate coverage and reach. Holding stakeholders to account for delivery on nutrition actions requires a well-functioning accountability infrastructure, which is lacking in nutrition. New accountability mechanisms need piloting and evaluation, financial resource flows to nutrition need to be made explicit, nutrition spending targets should be established, and some key data gaps need to be filled. For example, many UN member states cannot report on their WHA progress and those that can often rely on data >5 y old. The world can accelerate malnutrition reduction substantially, but this will require stronger accountability mechanisms to hold all stakeholders to account. |
Effectiveness of practices for improving the diagnostic accuracy of non ST elevation myocardial infarction in the emergency department: a Laboratory Medicine Best Practices systematic review
Layfield C , Rose J , Alford A , Snyder SR , Apple FS , Chowdhury FM , Kontos MC , Newby LK , Storrow AB , Tanasijevic M , Leibach E , Shaw C , Liebow EB , Christenson RH . Clin Biochem 2015 48 204-12 OBJECTIVES: This article is a systematic review of the effectiveness of four practices (assay selection, decision point cardiac troponin (cTn) threshold selection, serial testing, and point of care testing) for improving the diagnostic accuracy Non-ST-Segment Elevation Myocardial Infarction (NSTEMI) in the Emergency Department. DESIGN AND METHODS: The CDC-funded Laboratory Medicine Best Practices (LMBP) Initiative systematic review method for quality improvement practices was used. RESULTS: The current ACC/AHA guidelines recommend using cardiac troponin assays with a 99th percentile upper reference limit (URL) diagnostic threshold to diagnose NSTEMI. The evidence in this systematic review indicates that contemporary sensitive cTn assays meet the assay profile requirements (sensitivity, specificity, PPV, and NPV) to more accurately diagnose NSTEMI than alternate tests. Additional biomarkers did not increase diagnostic effectiveness of cTn assays. Sensitivity, specificity, and NPV were consistently high and low PPV improved with serial sampling. Evidence for use of point of care cTn testing was insufficient to make recommendation, though some evidence suggests that use may result in reduction to patient length of stay and costs. CONCLUSIONS: Based on the review of and the LMBP recommendation criteria, we recommend the use of cardiac troponin assays without additional biomarkers using the 99th percentile URL as the clinical diagnostic threshold for the diagnosis of NSTEMI. We recommend serial sampling with one sample at presentation and at least one additional second sample taken at least 6h later to identify a rise or fall in the troponin level. No recommendation is made either for or against the use of point of care tests. DISCLAIMER: The findings and conclusions in this article are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention/the Agency for Toxic Substances and Disease Registry (CDC/ATSDR). |
The challenge of artemisinin resistance can only be met by eliminating Plasmodium falciparum malaria across the Greater Mekong subregion
Smith Gueye C , Newby G , Hwang J , Phillips AA , Whittaker M , MacArthur JR , Gosling RD , Feachem RG . Malar J 2014 13 286 Artemisinin-based combinations are currently the most effective anti-malarials and, in addition to vector control, have led to significant declines in malaria morbidity and mortality. However, foci of artemisinin drug resistance have been identified in the Greater Mekong subregion (GMS) of the Asia Pacific, threatening the major gains made in malaria control and potentially creating a parasite pool that is more difficult to treat and eliminate. Efforts are underway to halt the spread of artemisinin resistance, including coordination of activities and funding, and identification of areas of suspected artemisinin resistance, now using a newly identified molecular marker. However, targeting resources to the containment of resistant parasites is likely inefficient and monitoring impact is challenging. A more sustainable solution is the rapid elimination of all Plasmodium falciparum parasites from the GMS. This strategy is more efficient for several reasons. First, a subregional strategy is in line with current commitment to elimination and will build upon the existing national political support for elimination as well as enhancing collaboration among countries. Second, the challenge of human mobility in the GMS is subregional in scope and requires a harmonized elimination strategy. Third, countries will need to improve and intensify malaria operations to reach elimination, and this will be a singular goal across the subregion. Rallying around the goal of P. falciparum elimination will not only utilize existing regional bodies to catalyze political and funding support, but will also leverage the funding already in place to achieve this subregional goal. |
New global estimates of malaria deaths
Lynch M , Korenromp E , Eisele T , Newby H , Steketee R , Kachur SP , Nahlen B , Yoon S , MacArthur J , Newman R , Cibulskis R . Lancet 2012 380 (9841) 559 Christopher Murray and colleagues' paper (Feb 4, p 413)1 estimating the number of malaria deaths worldwide, 1980–2010, invites caution in its interpretation. Murray and colleagues estimate that there were 1 238 000 malaria deaths worldwide in 2010, compared with WHO's estimate of 655 000.2 However, wide uncertainty ranges accompany both the Murray and colleagues and WHO estimates, and with one exception—for deaths in people older than 5 years in Africa—these ranges overlap, so the estimates cannot be regarded as significantly different (figure). |
Effectiveness-based guidelines for the prevention of cardiovascular disease in women--2011 update: a guideline from the American Heart Association
Mosca L , Benjamin EJ , Berra K , Bezanson JL , Dolor RJ , Lloyd-Jones DM , Newby LK , Pina IL , Roger VL , Shaw LJ , Zhao D , Beckie TM , Bushnell C , D'Armiento J , Kris-Etherton PM , Fang J , Ganiats TG , Gomes AS , Gracia CR , Haan CK , Jackson EA , Judelson DR , Kelepouris E , Lavie CJ , Moore A , Nussmeier NA , Ofili E , Oparil S , Ouyang P , Pinn VW , Sherif K , Smith SC Jr , Sopko G , Chandra-Strobos N , Urbina EM , Vaccarino V , Wenger NK . Circulation 2011 123 (11) 1243-62 Substantial progress has been made in the awareness, treatment, and prevention of cardiovascular disease (CVD) in women since the first women-specific clinical recommendations for the prevention of CVD were published by the American Heart Association (AHA) in 1999.1 The myth that heart disease is a “man’s disease” has been debunked; the rate of public awareness of CVD as the leading cause of death among US women has increased from 30% in 1997 to 54% in 2009.2 The age-adjusted death rate resulting from coronary heart disease (CHD) in females, which accounts for about half of all CVD deaths in women, was 95.7 per 100 000 females in 2007, a third of what it was in 1980.3,4 Approximately 50% of this decline in CHD deaths has been attributed to reducing major risk factors and the other half to treatment of CHD including secondary preventive therapies.4 Major randomized controlled clinical trials such as the Women’s Health Initiative have changed the practice of CVD prevention in women over the past decade.5 The investment in combating this major public health issue for women has been significant, as have the scientific and medical achievements. | Despite the gains that have been made, considerable challenges remain. In 2007, CVD still caused ≈1 death per minute among women in the United States.6 These represent 421 918 deaths, more women’s lives than were claimed by cancer, chronic lower respiratory disease, Alzheimer disease, and accidents combined.6 Reversing a trend of the past 4 decades, CHD death rates in US women 35 to 54 years of age now actually appear to be increasing, likely because of the effects of the obesity epidemic.4 CVD rates in the United States are significantly higher for black females compared with their white counterparts (286.1/100 000 versus 205.7/100 000). This disparity parallels the substantially lower rate of awareness of heart disease and stroke that has been documented among black versus white women.2,6–8 Of concern is that in a recent AHA national survey, only 53% of women said the first thing they would do if they thought they were having a heart attack was to call 9-1-1. This distressing lack of appreciation by many women for the need for emergency care for acute cardiovascular events is a barrier to optimal survival among women and underscores the need for educational campaigns targeted to women.2 |
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