Selective nitrogen adsorption via backbonding in a metal-organic framework with exposed vanadium sites.

Industrial processes prominently feature π-acidic gases, and an adsorbent capable of selectively interacting with these molecules could enable important chemical separations1-4. Biological systems use accessible, reducing metal centres to bind and activate weakly π-acidic species, such as N2, through backbonding interactions5-7, and incorporating analogous moieties into a porous material should give rise to a similar adsorption mechanism for these gaseous substrates8. Here, we report a metal-organic framework featuring exposed vanadium(II) centres capable of back-donating electron density to weak π acids to successfully target π acidity for separation applications. This adsorption mechanism, together with a high concentration of available adsorption sites, results in record N2 capacities and selectivities for the removal of N2 from mixtures with CH4, while further enabling olefin/paraffin separations at elevated temperatures. Ultimately, incorporating such π-basic metal centres into porous materials offers a handle for capturing and activating key molecular species within next-generation adsorbents.

Three validation studies of the personality assessment inventory short form.

OBJECTIVE: We examined the psychometric properties of the Personality Assessment Inventory-Short Form (PAI-SF). METHOD: Study 1 compared single-session short and full form PAI profiles of 200 outpatients, Study 2 examined PAI forms of 107 nonclinical adults across two administrations, and Study 3 compared correlations between full and short form scales and extratest variables. RESULTS: Study 1 correlations between short and full form scales ranged from 0.85 to 0.95 (Mdn = 0.91), with lower correlations, ranging from 0.59 to 0.86 for clinical scales (Mdn = 0.82), in Study 2. In Study 3 only 4 of 34 correlations differed significantly between extratest variables and the PAI versus the PAI-SF. CONCLUSIONS: These results indicate favorable psychometric properties of the PAI-SF.

Geographic information system for improving maternal and newborn health: recommendations for policy and programs.

This correspondence argues and offers recommendations for how Geographic Information System (GIS) applied to maternal and newborn health data could potentially be used as part of the broader efforts for ending preventable maternal and newborn mortality. These recommendations were generated from a technical consultation on reporting and mapping maternal deaths that was held in Washington, DC from January 12 to 13, 2015 and hosted by the United States Agency for International Development's (USAID) global Maternal and Child Survival Program (MCSP). Approximately 72 participants from over 25 global health organizations, government agencies, donors, universities, and other groups participated in the meeting.The meeting placed emphases on how improved use of mapping could contribute to the post-2015 United Nation's Sustainable Development Goals (SDGs), agenda in general and to contribute to better maternal and neonatal health outcomes in particular. Researchers and policy makers have been calling for more equitable improvement in Maternal and Newborn Health (MNH), specifically addressing hard-to-reach populations at sub-national levels. Data visualization using mapping and geospatial analyses play a significant role in addressing the emerging need for improved spatial investigation at subnational scale. This correspondence identifies key challenges and recommendations so GIS may be better applied to maternal health programs in resource poor settings. The challenges and recommendations are broadly grouped into three categories: ancillary geospatial and MNH data sources, technical and human resources needs and community participation.

Genomic ancestry and somatic alterations correlate with age at diagnosis in Hispanic children with B-cell acute lymphoblastic leukemia.

Hispanic children have a higher incidence of acute lymphoblastic leukemia (ALL) than non-Hispanic whites but tend to be diagnosed at older ages. In genome-wide association studies, Native American ancestry and polymorphisms in six genes have been associated with ALL risk. In multivariable regression models, we investigated whether genomic ancestry, inherited risk SNPs, or acquired somatic alterations were associated with differences in age at diagnosis in Hispanic children with B-cell ALL. Genome-wide array data were used to estimate each participant's percent membership in the three Hispanic ancestral populations: Native American, African, and European. Each 20% increase in European ancestry was associated with a six month younger age at diagnosis (95% CI = 0.36-11.6 months, P = 0.037). Correspondingly, each 20% increase in Native American ancestry was associated with a six-month older age at diagnosis (P = 0.037). Both the TEL-AML1 translocation and high-hyperdiploidy were associated with younger age at diagnosis (24.4 months, P = 2.0 x 10(-4) and 12.4 months, P = 0.011, respectively), while CDKN2A and IKZF1 deletions were associated with older age at diagnosis (19.7 months, P = 7.0 x 10(-4) and 18.1 months, P = 0.012, respectively). No associations with age at diagnosis were observed for RAS mutation, PAX5 deletion or for known heritable risk alleles in IKZF1, CDKN2A, PIP4K2A, GATA3, ARID5B, or CEBPE. Because younger age at diagnosis is associated with improved treatment outcomes for children with ALL, the effect of European ancestry on ALL survival may be mediated by its effect on age at diagnosis, or by proxy, its association with more treatable molecular subtypes of ALL.

Global VAX: A U.S. contribution to global COVID-19 vaccination efforts, 2021-2023.

In December 2021 the U.S. Government announced a new, whole-of-government $1.8 billion effort, the Initiative for Global Vaccine Access (Global VAX) in response to the global COVID-19 pandemic. Using the foundation of decades of U.S. government investments in global health and working in close partnership with local governments and key global and multilateral organizations, Global VAX enabled the rapid acceleration of the global COVID-19 vaccine rollout in selected countries, contributing to increased COVID-19 vaccine coverage in some of the world's most vulnerable communities. Through Global VAX, the U.S. Government has supported 125 countries to scale up COVID-19 vaccine delivery and administration while strengthening primary health care systems to respond to future health crises. The progress made by Global VAX has paved the way for a stronger global recovery and improved global health security.

Cost analysis of enhancing linkages to HIV care following jail: a cost-effective intervention.

We are not aware of published cost-effectiveness studies addressing community transitional programs for HIV-infected jail detainees. To address this gap, data from 9 sites of EnhanceLink, a project that enrolled HIV-infected releasees from jails across the US, were examined. Figures on the number of clients served, cost of linkage services, number of linkages and 6-month sustained linkages to community HIV care, and number of clients achieving viral suppression were assessed for subjects released in the first quarter of 2010 (n = 543). The cost analysis included all costs that participating service agencies incurred. A cost-effectiveness analysis was conducted to estimate the new HIV cases averted by EnhanceLink and the cost per quality-adjusted life year saved by the program. The mean cost per linked client was $4,219; the mean cost per 6-month sustained linkage was $4,670; and the mean cost per client achieving viral suppression was $8,432. Compared to standard care, the cost per additional quality-adjusted life year saved was $72,285, suggesting that the EnhanceLink interventions were cost-effective from the societal perspective.

Planning for success predicts virus suppressed: results of a non-controlled, observational study of factors associated with viral suppression among HIV-positive persons following jail release.

In the United States, jail frequently disrupts access to HIV care. EnhanceLink, a 10-site demonstration project promoting linkage to HIV primary care upon jail discharge, offered an opportunity to gauge how many releasees had favorable clinical outcomes. Individual level data were available on 1270 participants. Persons never discharged from the correctional environment were excluded. Multivariate logistic regression identified factors associated with viral suppression 6 months post discharge (6M-VL < 400). Among 1082 individuals eligible for follow-up evaluation, 25.7 % had 6M-VL < 400. 6M-VL < 400 was associated with case managers assessing whether help was needed for linkage to HIV-related medical services and clients keeping an appointment with a case manager. The adjusted odds ratio (aOR) of 6M-VL < 400 associated with attending a meeting with an HIV care provider within 30 days of release was 1.85. The results of this non-controlled, observational study support further development and rigorous evaluation of transitional care programs for HIV-positive jailed persons across the country.

HIV-positive and in jail: race, risk factors, and prior access to care.

UNLABELLED: Black individuals represent 13 % of the US population but 46 % of HIV positive persons and 40 % of incarcerated persons. The national EnhanceLink project evaluated characteristics of HIV-positive jail entrants at ten sites and explored associations between race and HIV disease state. Between 1/2008 and 10/2011, 1,270 study participants provided demographic and clinical data. Adjusted odds ratios (aORs) were calculated for advanced HIV disease (CD4 < 200 cells/mm(3)) and uncontrolled viremia (viral load > 400 copies/ml) for Black (n = 807) versus non-Black (n = 426) participants. Sixty-five percent of HIV-positive jail participants self-identified as Black. Among all participants, fewer than half had a high school diploma or GED, the median number of lifetime arrests was 15, and major mental illness and substance abuse were common. Black participants were more likely to be older than non-Black participants, and less likely to have health insurance (70 vs 83 %) or an HIV provider (73 vs 81 %) in the prior 30 days. Among all male study participants (n = 870), 20 % self-identified as homosexual or bisexual. Black male participants were more likely to be homosexual or bisexual (22 vs 16 %) and less likely to have a history of injection drug use (20 vs 50 %) than non-Black male participants. Advanced HIV disease was associated with self-identification as Black (aOR = 1.84, 95 % CI 1.16-2.93) and time since HIV diagnosis of more than two years (aOR = 3.55, 95 % CI 1.52-8.31); advanced disease was inversely associated with age of less than 38 years (aOR = 0.41, 95 % CI 0.24-0.70). Uncontrolled viremia was inversely associated with use of antiretroviral therapy (ART) in the prior 7 days (aOR = 0.25, 95 % CI 0.15-0.43) and insurance coverage in the prior 30 days (aOR = 0.46, 95 % CI 0.26-0.81). CONCLUSIONS: The racial disparities of HIV and incarceration among Black individuals in the US are underscored by the finding that 65 % of HIV-positive jail participants self-identified as Black in this ten-site study. Our study also found that 22 % of Black male participants self-identified as men who have sex with men (MSM). We believe these findings support jails as strategic venues to reach heterosexual, bisexual, and homosexual HIV-positive Black men who may have been overlooked in the community. Among HIV-positive jail entrants, Black individuals had more advanced HIV disease. Self-identification as Black was associated with a lower likelihood of having health insurance or an HIV provider prior to incarceration. HIV care and linkage interventions are needed within jails to better treat HIV and to address these racial disparities.

Saving Lives Together: A Qualitative Evaluation of the Saving Mothers, Giving Life Public-Private Partnership.

BACKGROUND: Public-private partnerships (PPPs) have garnered appeal among governments around the world, making impressive contributions to health resource mobilization and improved health outcomes. Saving Mothers, Giving Life (SMGL), a PPP aimed at reducing maternal deaths, was born out of the need to mobilize new actors, capitalize on diverse strengths, and marshal additional resources. A qualitative study was initiated to examine how the SMGL partnership functioned to achieve mortality reduction goals and foster country ownership and sustainability. METHODS: We purposively selected 57 individuals from U.S. and global public and private partner organizations engaged in SMGL in Uganda and Zambia for qualitative in-depth interviews. Representative selection was based on participant knowledge of partner activities and engagement with the partnership at various points in time. Of those invited, 46 agreed to participate. Transcripts were double-coded, and discordant codes were resolved by consensus. RESULTS: Several recurring themes emerged from our study. Perceived strengths of the partnership included goal alignment; diversity in partner expertise; high-quality monitoring, evaluation, and learning; and strong leadership and country ownership. These strengths helped SMGL achieve its goals in reducing maternal and newborn mortality. However, uncertainty in roles and responsibilities, perceived power inequities between partners, bureaucratic processes, a compressed timeline, and limited representation from ministries of health in the SMGL governance structure were reported impediments. CONCLUSION: While SMGL faced many of the same challenges experienced by other PPPs, local counterparts and the SMGL partners were able to address many of these issues and the partnership was ultimately praised for being a successful model of interagency coordination. Efforts to facilitate country ownership and short-term financial sustainability have been put in place for many elements of the SMGL approach; however, long-term financing is still a challenge for SMGL as well as other global health PPPs. Addressing key impediments outlined in this study may improve long-term sustainability of similar PPPs.

Did Saving Mothers, Giving Life Expand Timely Access to Lifesaving Care in Uganda? A Spatial District-Level Analysis of Travel Time to Emergency Obstetric and Newborn Care.

INTRODUCTION: Interventions for the Saving Mothers, Giving Life (SMGL) initiative aimed to ensure all pregnant women in SMGL-supported districts have timely access to emergency obstetric and newborn care (EmONC). Spatial travel-time analyses provide a visualization of changes in timely access. METHODS: We compared travel-time estimates to EmONC health facilities in SMGL-supported districts in western Uganda in 2012, 2013, and 2016. To examine EmONC access, we analyzed a categorical variable of travel-time duration in 30-minute increments. Data sources included health facility assessments, geographic coordinates of EmONC facilities, geolocated population estimates of women of reproductive age (WRA), and other road network and geographic sources. RESULTS: The number of EmONC facilities almost tripled between 2012 and 2016, increasing geographic access to EmONC. Estimated travel time to EmONC facilities declined significantly during the 5-year period. The proportion of WRA able to access any EmONC and comprehensive EmONC (CEmONC) facility within 2 hours by motorcycle increased by 18% (from 61.3% to 72.1%, P < .01) and 37% (from 51.1% to 69.8%, P < .01), respectively from baseline to 2016. Similar increases occurred among WRA accessing EmONC and CEmONC respectively if 4-wheeled vehicles (14% and 31% increase, P < .01) could be used. Increases in timely access were also substantial for nonmotorized transportation such as walking and/or bicycling. CONCLUSIONS: Largely due to the SMGL-supported expansion of EmONC capability, timely access to EmONC significantly improved. Our analysis developed a geographic outline of facility accessibility using multiple types of transportation. Spatial travel-time analyses, along with other EmONC indicators, can be used by planners and policy makers to estimate need and target underserved populations to achieve further gains in EmONC accessibility. In addition to increasing the number and geographic distribution of EmONC facilities, complementary efforts to make motorized transportation available are necessary to achieve meaningful increases in EmONC access.

Duplication of effort across Development Projects in Nigeria: An example using the Master Health Facility List.

OBJECTIVE: Duplication of effort across development projects is often the resultant effect of poor donor coordination in low- and middle- income countries which receive development assistance. This paper examines the persistence of duplication through a case study of health facility listing exercises in Nigeria. METHODS: Document reviews, key informant interviews, and a stakeholder's meeting were undertaken to identify similar health facility listing exercises between 2010 and 2016. RESULTS: As an outcome of this process, ten different health facility listing efforts were identified. DISCUSSIONS: Proper coordination and collaboration could have resulted in a single list grown over time, ensuring return on investments. This study provides evidence of the persistence of duplication, years after global commitment to harmonization, better coordination and efficient use of development assistance were agreed to. CONCLUSIONS: The paper concludes by making a proposal for strategic leadership in the health sector and the need to leverage information and communications technology through the development of an electronic Health Facility Registry that can archive the data on health facilities, create opportunity for continuous updates of the list, and provide for easy sharing of the data across different country stakeholders thereby eliminating duplication. KEYWORDS: Aid Effectiveness, Donor coordination; Health Facilities; Health Information System; Health Systems; International Cooperation; Master Facility List.

Tobacco Smoke and Ras Mutations Among Latino and Non-Latino Children with Acute Lymphoblastic Leukemia.

BACKGROUND AND AIMS: Childhood acute lymphoblastic leukemia (ALL) is a biologically heterogeneous disease, and mutations in the KRAS and NRAS oncogenes are present at diagnosis in about one-fifth of cases. Ras mutations were previously associated with environmental exposures in leukemias as well as in many other cancer types. This study examined whether Ras mutation could define a unique etiologic group of childhood ALL associated with tobacco smoke, a well-established mutagen and carcinogen. METHODS: We included 670 children with ALL enrolled in a case-control study in California (1995-2013), including 50.6% Latinos. Parental and child exposure to tobacco smoke was obtained from interviews. Sanger sequencing was used to detect the common KRAS and NRAS hotspot mutations in diagnostic bone marrow DNA. ALL cases were also characterized for common chromosome abnormalities. In case-case analyses, logistic regression analyses were used to estimate odds ratios to describe the association between tobacco smoke exposure and childhood ALL with Ras mutations. RESULTS: KRAS or NRAS mutations were detected in ∼18% of children diagnosed with ALL. Ras mutations were more common among Latino cases compared with non-Latino whites and in high-hyperdiploid ALL. No associations were observed between parental smoking or child's passive exposure to smoke and Ras positive ALL. CONCLUSIONS: The apparent lack of association between tobacco smoke and Ras mutation in childhood ALL suggests that Ras mutations do not specifically define a tobacco-related etiologic pathway. Reasons for racial and ethnic differences in ALL are not well understood and could reflect differences in etiology that warrant further examination.

Estimating Contraceptive Prevalence Using Logistics Data for Short-Acting Methods: Analysis Across 30 Countries.

BACKGROUND: Contraceptive prevalence rate (CPR) is a vital indicator used by country governments, international donors, and other stakeholders for measuring progress in family planning programs against country targets and global initiatives as well as for estimating health outcomes. Because of the need for more frequent CPR estimates than population-based surveys currently provide, alternative approaches for estimating CPRs are being explored, including using contraceptive logistics data. METHODS: Using data from the Demographic and Health Surveys (DHS) in 30 countries, population data from the United States Census Bureau International Database, and logistics data from the Procurement Planning and Monitoring Report (PPMR) and the Pipeline Monitoring and Procurement Planning System (PipeLine), we developed and evaluated 3 models to generate country-level, public-sector contraceptive prevalence estimates for injectable contraceptives, oral contraceptives, and male condoms. Models included: direct estimation through existing couple-years of protection (CYP) conversion factors, bivariate linear regression, and multivariate linear regression. Model evaluation consisted of comparing the referent DHS prevalence rates for each short-acting method with the model-generated prevalence rate using multiple metrics, including mean absolute error and proportion of countries where the modeled prevalence rate for each method was within 1, 2, or 5 percentage points of the DHS referent value. RESULTS: For the methods studied, family planning use estimates from public-sector logistics data were correlated with those from the DHS, validating the quality and accuracy of current public-sector logistics data. Logistics data for oral and injectable contraceptives were significantly associated (P<.05) with the referent DHS values for both bivariate and multivariate models. For condoms, however, that association was only significant for the bivariate model. With the exception of the CYP-based model for condoms, models were able to estimate public-sector prevalence rates for each short-acting method to within 2 percentage points in at least 85% of countries. CONCLUSIONS: Public-sector contraceptive logistics data are strongly correlated with public-sector prevalence rates for short-acting methods, demonstrating the quality of current logistics data and their ability to provide relatively accurate prevalence estimates. The models provide a starting point for generating interim estimates of contraceptive use when timely survey data are unavailable. All models except the condoms CYP model performed well; the regression models were most accurate but the CYP model offers the simplest calculation method. Future work extending the research to other modern methods, relating subnational logistics data with prevalence rates, and tracking that relationship over time is needed.

The effect of access to contraceptive services on injectable use and demand for family planning in Malawi.

CONTEXT: Previous studies have identified positive relationships between geographic proximity to family planning services and contraceptive use, but have not accounted for the effect of contraceptive supply reliability or the diminishing influence of facility access with increasing distance. METHODS: Kernel density estimation was used to geographically link Malawi women's use of injectable contraceptives and demand for birth spacing or limiting, as drawn from the 2010 Demographic and Health Survey, with contraceptive logistics data from family planning service delivery points. Linear probability models were run to identify associations between access to injectable services-measured by distance alone and by distance combined with supply reliability-and injectable use and family planning demand among rural and urban populations. RESULTS: Access to services was an important predictor of injectable use. The probability of injectable use among rural women with the most access by both measures was 7‒8 percentage points higher than among rural dwellers with the least access. The probability of wanting to space or limit births among urban women who had access to the most reliable supplies was 18 percentage points higher than among their counterparts with the least access. CONCLUSIONS: Product availability in the local service environment plays a critical role in women's demand for and use of contraceptive methods. Use of kernel density estimation in creating facility service environments provides a refined approach to linking women with services and accounts for both distance to facilities and supply reliability. Urban and rural differences should be considered when seeking to improve contraceptive access.