Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 11 de 11
Filter
1.
Article in English | MEDLINE | ID: mdl-36554803

ABSTRACT

Breastfeeding is essential for child survival but globally less than fifty percent of infants receive adequate breastfeeding. Gaps in breastfeeding knowledge and misinformation are widespread. Mass media aims to motivate mothers and families, encourage care-seeking, improve social norms, and counteract misleading advertising. However, the costs and coverage of mass media are not well documented. Our study provides a cost-accounting of four large-scale mass media interventions and coverage obtained through mass media. We retrospectively calculated annual costs and costs per beneficiary of mass media interventions based on expenditure records in four countries. The interventions were a part of multi-component breastfeeding strategies in Bangladesh, Burkina Faso, Nigeria, and Vietnam. Annual costs ranged from 566,366 USD in Nigeria to 1,210,286 USD in Vietnam. The number of mothers of children under two years and pregnant women ranged from 685,257 to 5,566,882, and all designated recipients reached during the life of programs ranged from 1,439,040 to 11,690,453 in Burkina Faso and Bangladesh, respectively. The cost per mother varied from USD 0.13 USD in Bangladesh to 0.85 USD in Burkina Faso. Evaluations showed that mass media interventions reached high coverage and frequent exposure. This analysis documents the financial costs and budgetary needs for implementing mass media components of large-scale breastfeeding programs. It provides annual costs, cost structures, and coverage achieved through mass media interventions in four low- and middle-income countries.


Subject(s)
Breast Feeding , Mass Media , Infant , Child , Humans , Female , Pregnancy , Burkina Faso , Bangladesh , Vietnam , Nigeria , Retrospective Studies
2.
Glob Health Sci Pract ; 10(5)2022 10 31.
Article in English | MEDLINE | ID: mdl-36316136

ABSTRACT

In 2015, a global learning agenda for the hormonal intrauterine device (IUD) was developed with priority research questions regarding use of the method in low- and middle-income countries. In addition, members of the Hormonal IUD Access Group aligned on a strategy to expand access in the context of volunteerism and contraceptive method choice. This article synthesizes evidence generated since then and describes steps taken to address demand- and supply-side barriers to access. Findings demonstrated high continuation rates and satisfaction among hormonal IUD users that are comparable to other long-acting reversible contraceptives (LARCs). Across studies, a sizable number of users reported they would have chosen a short-acting method or no method at all if the hormonal IUD were not an option, which suggests that women did not see the hormonal IUD as interchangeable with other LARC options and thus it may fill an important niche in the market. With several countries now poised to scale up the method, resource mobilization will be key. On the demand side, investments in implementation research will be critical to understanding how best to launch and scale the method, while ensuring the sustainability of multiple quality-assured suppliers with affordable public-sector pricing will be necessary on the supply side.


Subject(s)
Contraceptive Agents, Female , Interdisciplinary Placement , Intrauterine Devices , Female , Humans , Contraception/methods
3.
J Am Chem Soc ; 144(33): 15013-15019, 2022 08 24.
Article in English | MEDLINE | ID: mdl-35960875

ABSTRACT

Heme is an essential cofactor for many human proteins as well as the primary transporter of oxygen in blood. Recent studies have also established heme as a signaling molecule, imparting its effects through binding with protein partners rather than through reactivity of its metal center. However, the comprehensive annotation of such heme-binding proteins in the human proteome remains incomplete. Here, we describe a strategy which utilizes a heme-based photoaffinity probe integrated with quantitative proteomics to map heme-protein interactions across the proteome. In these studies, we identified 350+ unique heme-protein interactions, the vast majority of which were heretofore unknown and consist of targets from diverse functional classes, including transporters, receptors, enzymes, transcription factors, and chaperones. Among these proteins is the immune-related interleukin receptor-associated kinase 1 (IRAK1), where we provide preliminary evidence that heme agonizes its catalytic activity. Our findings should improve the current understanding of heme's regulation as well as its signaling functions and facilitate new insights of its roles in human disease.


Subject(s)
Heme , Proteomics , Carrier Proteins/metabolism , Heme/chemistry , Humans , Protein Binding , Proteome/metabolism , Signal Transduction , Transcription Factors/metabolism
4.
Chem Sci ; 12(22): 7839-7847, 2021 May 07.
Article in English | MEDLINE | ID: mdl-34168837

ABSTRACT

The use of photo-affinity reagents for the mapping of noncovalent small molecule-protein interactions has become widespread. Recently, several 'fully-functionalized' (FF) chemical tags have been developed wherein a photoactivatable capture group, an enrichment handle, and a functional group for synthetic conjugation to a molecule of interest are integrated into a single modular tag. Diazirine-based FF tags in particular are increasingly employed in chemical proteomic investigations; however, despite routine usage, their relative utility has not been established. Here, we systematically evaluate several diazirine-containing FF tags, including a terminal diazirine analog developed herein, for chemical proteomic investigations. Specifically, we compared the general reactivity of five diazirine tags and assessed their impact on the profiles of various small molecules, including fragments and known inhibitors revealing that such tags can have profound effects on the proteomic profiles of chemical probes. Our findings should be informative for chemical probe design, photo-affinity reagent development, and chemical proteomic investigations.

5.
J Infect Dis ; 223(8): 1345-1355, 2021 04 23.
Article in English | MEDLINE | ID: mdl-31851759

ABSTRACT

INTRODUCTION: Oral preexposure prophylaxis (PrEP) in the form of tenofovir-disoproxil-fumarate/emtricitabine is being implemented in selected sites in South Africa. Addressing outstanding questions on PrEP cost-effectiveness can inform further implementation. METHODS: We calibrated an individual-based model to KwaZulu-Natal to predict the impact and cost-effectiveness of PrEP, with use concentrated in periods of condomless sex, accounting for effects on drug resistance. We consider (1) PrEP availability for adolescent girls and young women aged 15-24 years and female sex workers, and (2) availability for everyone aged 15-64 years. Our primary analysis represents a level of PrEP use hypothesized to be attainable by future PrEP programs. RESULTS: In the context of PrEP use in adults aged 15-64 years, there was a predicted 33% reduction in incidence and 36% reduction in women aged 15-24 years. PrEP was cost-effective, including in a range of sensitivity analyses, although with substantially reduced (cost) effectiveness under a policy of ART initiation with efavirenz- rather than dolutegravir-based regimens due to PrEP undermining ART effectiveness by increasing HIV drug resistance. CONCLUSIONS: PrEP use concentrated during time periods of condomless sex has the potential to substantively impact HIV incidence and be cost-effective.


Subject(s)
Anti-HIV Agents , HIV Infections , Pre-Exposure Prophylaxis , Sex Workers , Unsafe Sex , Adolescent , Adult , Anti-HIV Agents/economics , Anti-HIV Agents/therapeutic use , Cost-Benefit Analysis , Drug Resistance , Emtricitabine/therapeutic use , Female , HIV Infections/drug therapy , HIV Infections/prevention & control , Humans , Male , Middle Aged , Models, Theoretical , Pre-Exposure Prophylaxis/economics , South Africa/epidemiology , Young Adult
6.
Photochem Photobiol Sci ; 18(12): 2849-2853, 2019 Dec 01.
Article in English | MEDLINE | ID: mdl-31729503

ABSTRACT

Recently, we demonstrated that triphenylacetic acid could be used to seal dye molecules within MOF-5, but guest release required the digestion of the framework by treatment with acid. We prepared the sterically bulky photocapping group [bis-(3-nitro-benzyl)-amino]-(3-nitro-phenyl)-acetic acid (PC1) that can prevent crystal violet dye diffusion from inside MOF-5 until removed by photolysis.

7.
Gates Open Res ; 2: 40, 2018.
Article in English | MEDLINE | ID: mdl-31131366

ABSTRACT

Rationale: As donor contributions for HIV/AIDS stagnate globally, national governments must seek ways to improve use of existing resources through interventions to drive efficiency at the facility level.  But program managers lack routine information on unit expenditures at points of care, and higher-level planners are unable to assess resource use in the health system.  Thus, managers cannot measure current levels of technical efficiency, and are unable to evaluate effectiveness of interventions to increase technical efficiency. Phased Implementation of REMS: FHI 360 developed the Routine Efficiency Monitoring System (REMS)-a relational database leveraging existing budget, expenditure and output data to produce quarterly site-level estimates of unit expenditure per service.  Along with the Government of the Republic of Zambia (GRZ) and implementation partner Avencion, we configured REMS to measure technical efficiency of Ministry of Health resources used to deliver HIV/AIDS services in 326 facilities in 17 high-priority districts in Copperbelt and Central Provinces.  REMS allocation algorithms were developed through facility assessments, and key informant interviews with MoH staff.  Existing IFMIS and DHIS-2 data streams provide recurring flows of expenditure and output data needed to estimate service-specific unit expenditures.  Trained users access REMS output through user-friendly dashboards delivered through a web-based application.  REMS as a Solution: District health managers use REMS to identify "outlier" facilities to test performance improvement interventions.  Provincial and national planners are using REMS to seek savings and ensure that resources are directed to geographic and programmatic areas with highest need.  REMS can support reimbursement for social health insurance and provide time-series data on facility-level costs for modeling. Conclusions and Next Steps:  REMS gives managers and planners substantially-improved data on how programs transform resources into services.  The GRZ is seeking funding to expand REMS nationally, covering all major disease areas.  Improved technical efficiency supports the goal of a sustainable HIV/AIDS response.

8.
J Int AIDS Soc ; 20(3)2017 11.
Article in English | MEDLINE | ID: mdl-29165892

ABSTRACT

INTRODUCTION: Accurate incidence estimates are needed to characterize the HIV epidemic and guide prevention efforts. HIV Incidence assays are cost-effective laboratory assays that provide incidence estimates from cross-sectional surveys. We conducted a global market assessment of HIV incidence assays under three market scenarios and estimated the economic value of improved incidence assays. METHODS: We interviewed 27 stakeholders, and reviewed journal articles, working group proceedings, and manufacturers' sales figures. We determined HIV incidence assay use in 2014, and estimated use in 2015 to 2017 and in 5 to 10-years under three market scenarios, as well as the cost of conducting national and key population surveys using an HIV incidence assay with improved performance. RESULTS: Global 2014 HIV incidence assay use was 308,900 tests, highest in Asia and mostly for case- and population-based surveillance. Estimated 2015 to 2017 use was 94,475 annually, with declines due to China and the United States discontinuing incidence assay use for domestic surveillance. Annual projected 5 to 10 year use under scenario 1 - no change in technology - was 94,475. For scenario 2 - a moderately improved incidence assay - projected annual use was 286,031. Projected annual use for scenario 3 - game-changing technologies with an HIV incidence assay part of (a) standard confirmatory testing, and (b) standard rapid testing, were 500,000 and 180 million, respectively. As HIV incidence assay precision increases, decreased sample sizes required for incidence estimation resulted in $5 to 23 million annual reductions in survey costs and easily offset the approximately $3 million required to develop a new assay. CONCLUSIONS: Improved HIV incidence assays could substantially reduce HIV incidence estimation costs. Continued development of HIV incidence assays with improved performance is required to realize these cost benefits.


Subject(s)
HIV Infections/economics , HIV Infections/epidemiology , Cost-Benefit Analysis , Cross-Sectional Studies , Epidemics , Forecasting , Global Health , Humans , Incidence
9.
Glob Health Sci Pract ; 4(2): 300-10, 2016 06 20.
Article in English | MEDLINE | ID: mdl-27353622

ABSTRACT

To address low contraceptive use in Tanzania, a pilot intervention using a mobile job aid was developed to guide community health workers (CHWs) to deliver integrated counseling on family planning, HIV, and other sexually transmitted infections (STIs). In this article, we describe the process of developing the family planning algorithms and implementation of the mobile job aid, discuss how the job aid supported collection of real-time data for decision making, and present the cost of the overall system based on an evaluation of the pilot. The family planning algorithm was developed, beginning in June 2011, in partnership with the Tanzania Ministry of Health and Social Welfare based on a combination of evidence-based tools such as the Balanced Counseling Strategy Plus Toolkit. The pilot intervention and study was implemented with 25 CHWs in 3 wards in Ilala district in Dar es Salaam between January 2013 and July 2013. A total of 710 family planning users (455 continuing users and 255 new users) were registered and counseled using the mobile job aid over the 6-month intervention period. All users were screened for current pregnancy, questioned on partner support for contraceptive use, counseled on a range of contraceptives, and screened for HIV/STI risk. Most new and continuing family planning users chose pills and male condoms (59% and 73%, respectively). Pills and condoms were provided by the CHW at the community level. Referrals were made to the health facility for pregnancy confirmation, injectable contraceptives, long-acting reversible contraceptives and HIV/STI testing. Follow-up visits with clients were planned to confirm completion of the health facility referral. The financial cost of implementing this intervention with 25 CHWs and 3 supervisors are estimated to be US$26,000 for the first year. For subsequent years, the financial costs are estimated to be 73% lower at $7,100. Challenges such as limited client follow-up by CHWs and use of data by supervisors identified during the pilot are currently being addressed during the scale-up phase by developing accountability and incentive mechanisms for CHWs and dashboards for data access and use.


Subject(s)
Cell Phone , Community Health Workers , Contraception/methods , Counseling/methods , Family Planning Services , Sex Education/methods , Adolescent , Adult , Algorithms , Contraceptive Agents , Costs and Cost Analysis , Data Collection , Female , HIV Infections/prevention & control , Humans , Long-Acting Reversible Contraception , Male , Patient Acceptance of Health Care , Referral and Consultation , Tanzania , Young Adult
10.
Sex Transm Dis ; 33(6): 350-6, 2006 Jun.
Article in English | MEDLINE | ID: mdl-16505747

ABSTRACT

OBJECTIVE: The objective of this study was to highlight the value of preventing unintended pregnancies among HIV-infected women as a strategy to prevent perinatal HIV transmission. GOAL: The goal of this study was to assess the cost-effectiveness of family planning programs to avert HIV-positive births with the current programmatic emphasis: prenatal care services that provide and promote nevirapine for prevention of mother-to-child transmission of HIV. STUDY DESIGN: Cost-effectiveness analyses were conducted from the health system perspective during 1 year with a hypothetical sub-Saharan African population. Expected program costs were combined with number of HIV-positive births averted for each strategy. RESULTS: At the same level of expenditure, the contraceptive strategy averts 28.6% more HIV-positive births than nevirapine for prevention of mother-to-child transmission of HIV. CONCLUSIONS: Increasing contraceptive use among nonusers of contraception who do not want to get pregnant is cost-effective and is an equally important strategy to prevent perinatal transmission as prenatal care programs that provide and promote nevirapine to HIV-infected mothers.


Subject(s)
Contraception/economics , Contraception/statistics & numerical data , HIV Infections/prevention & control , HIV Infections/transmission , Infectious Disease Transmission, Vertical/prevention & control , Pregnancy Complications, Infectious/prevention & control , Adolescent , Adult , Africa South of the Sahara/epidemiology , Anti-HIV Agents/economics , Anti-HIV Agents/therapeutic use , Cost-Benefit Analysis , Female , Humans , Middle Aged , Nevirapine/economics , Nevirapine/therapeutic use , Pregnancy , Prenatal Care/economics , Prenatal Care/statistics & numerical data
SELECTION OF CITATIONS
SEARCH DETAIL
...