87 research outputs found
Non-Muslim Integration Into the Early Islamic Caliphate Through the Use of Surrender Agreements
In this honors thesis, I discuss the role of surrender agreements in the early Islamic caliphate and their evolution through the ninth century. Seen as a window into the developing relations between Muslims and non-Muslims, surrender agreements shed considerable light on the evolving conceptualization of non-Muslimsâ place in dar al-Islam from the point of view of Islamic legal tradition and political theory. By defining the relationship between Muslims and non-Muslims in a framework that was agreed on by all parties and one that preserved the basic rights of non-Muslims, these agreements were remarkably effective in facilitating the incorporation of non-Muslims into early Islamic society. Using a historical background, I demonstrate that the original, early surrender agreements, concluded upon the Muslim conquests, contributed to non-Muslimsâ integration into the early Islamic caliphate by defining non-Muslimsâ social, political, and legal status in relation to Muslims in dar al-Islam. Typically separated into two phases, both the early, original surrender and the later version of surrender agreements that claimed to be âauthenticâ, formed the basis of the legal, juristic articulation of the evolving status of dhimmis in the Abode of Islam as a part of the development of Islamic international law (siyar)
Population-level susceptibility, severity and spread of pandemic influenza: design of, and initial results from, a pre-pandemic and hibernating pandemic phase study using cross-sectional data from the Health Survey for England (HSE)
Background
Assessing severity and spread of a novel influenza strain at the start of a pandemic is critical for informing a targeted and proportional response. It requires community-level studies to estimate the burden of infection and disease. Rapidly initiating such studies in a pandemic is difficult. The study aims to establish an efficient system allowing real-time assessment of population susceptibility, spread of infection and clinical attack rates in the event of a pandemic.
Methods
We developed and appended additional survey questions and specimen collection to the Health Survey for England (HSE) â a large, annual, rolling nationally representative general population survey recruiting throughout the year â to enable rapid population-based surveys of influenza infection and disease during a pandemic. Using these surveys we can assess the spread of the virus geographically, by age and through time. The data generated can also provide denominators for national estimates of case fatality and hospitalisation rates.Phase 1: we compared retrospectively collected HSE illness rates during the first two infection waves of the 2009 pandemic with the Flu Watch study (a prospective community cohort). Monthly and seasonal age-specific rates of illness and proportion vaccinated were compared.Phase 2: we piloted blood specimen and data collection alongside the 2012â13 HSE. We are developing laboratory methods and protocols for real-time serological assays of a novel pandemic influenza virus using these specimens, and automated programmes for analysing and reporting illness and infection rates.Phase 3: during inter-pandemic years, the study enters a holding phase, where it is included in the yearly HSE ethics application and planning procedures, allowing rapid triggering in a pandemic.Phase 4: once retriggered, the study will utilise the methods developed in phase 2 to monitor the severity and spread of the pandemic in real time.
Results
Phase 1: the rates of reported illness during the first two waves in the HSE underestimated the community burden as measured by Flu Watch, but the patterns of illness by age and time were broadly comparable. The extent of underestimation was greatest for HSE participants interviewed later in the year compared with those interviewed closer to the pandemic. Vaccine uptake in the HSE study was comparable to independent national estimates and the Flu Watch study.Phases 2 and 3: illness data and serological samples from 2018 participants were collected in the 2012â13 HSE and transferred to the University College London Hospital. In the 2013 HSE and onwards, this project was included in the annual HSE ethics and planning rounds.
Conclusions
The HSEâs underestimation of illness rates during the first two waves of the pandemic is probably due to recall bias and the limitation of being able to report only one illness when multiple illnesses per season can occur. Changes to the illness questions (reporting only recent illnesses) should help minimise these issues. Additional prospective follow-up could improve measurement of disease incidence. The representative nature of the HSE allows accurate measurements of vaccine uptake.
Study registration
This study is registered as ISRCTN80214280.
Funding
This project was funded by the NIHR Public Health Research programme and will be published in full inPublic Health Research; Vol. 3, No. 6. See the NIHR Journals Library website for further project information
Effects of educational disruption and changes in school context on children's mental health:Associations with school level disadvantage and individual bullying involvement
Natural disasters happen across the world. The situations are different but the disruption to children's education and wellbeing is similar. This study focused on the school context changes caused by the COVID-19 global disaster, and the impact of these changes on children's mental health. The aim was to better understand the associations between any mental health changes and children's school level of deprivation and pre-disaster involvement in bullying. Cross-sectional data were collected from 4316 children aged 6â11 years old, from 57 schools across England and Wales. Data were collected before the national lockdowns, early 2020, and 3â5 months after the final return to school, summer 2021, when schools were operating under a range of context restrictions. Child data included bullying involvement at school and health-related quality of life; teacher data included reports of each child's internalising, externalising and prosocial behaviours. School-level disadvantage was determined by the proportion of children in each school eligible to receive free school meals (an indicator of family disadvantage). The results showed that victims of bullying pre-lockdown, and pupils from schools with a higher concentration of disadvantage, had significantly reduced externalising behaviours once back in the restricted school context. Victims had also increased their prosocial behaviours. It is possible that the restricted school context may have been a relief for the most vulnerable pupils. This study adds a new phase of understanding to the global disaster literature and the initial return to school when the environment is the same but the context has changed.</p
Effects of educational disruption and changes in school context on children's mental health:Associations with school level disadvantage and individual bullying involvement
Natural disasters happen across the world. The situations are different but the disruption to children's education and wellbeing is similar. This study focused on the school context changes caused by the COVID-19 global disaster, and the impact of these changes on children's mental health. The aim was to better understand the associations between any mental health changes and children's school level of deprivation and pre-disaster involvement in bullying. Cross-sectional data were collected from 4316 children aged 6â11 years old, from 57 schools across England and Wales. Data were collected before the national lockdowns, early 2020, and 3â5 months after the final return to school, summer 2021, when schools were operating under a range of context restrictions. Child data included bullying involvement at school and health-related quality of life; teacher data included reports of each child's internalising, externalising and prosocial behaviours. School-level disadvantage was determined by the proportion of children in each school eligible to receive free school meals (an indicator of family disadvantage). The results showed that victims of bullying pre-lockdown, and pupils from schools with a higher concentration of disadvantage, had significantly reduced externalising behaviours once back in the restricted school context. Victims had also increased their prosocial behaviours. It is possible that the restricted school context may have been a relief for the most vulnerable pupils. This study adds a new phase of understanding to the global disaster literature and the initial return to school when the environment is the same but the context has changed.</p
Strengthening a culture of prevention in low- and middle-income countries: Balancing scientific expectations and contextual realities
Relevant initiatives are being implemented in low- and middle-income countries (LMICs) aimed at strengthening a culture of prevention. However, cumulative contextual factors constitute significant barriers for implementing rigorous prevention science in these contexts, as defined by guidelines from high-income countries (HICs). Specifically, disseminating a culture of prevention in LMICs can be impacted by political instability, limited health coverage, insecurity, limited rule of law, and scarcity of specialized professionals. This manuscript offers a contribution focused on strengthening a culture of prevention in LMICs. Specifically, four case studies are presented illustrating the gradual development of contrasting prevention initiatives in northern and central MĂ©xico, PanamĂĄ, and Sub-Saharan Africa. The initiatives share the common goal of strengthening a culture of prevention in LMICs through the dissemination of efficacious parenting programs, aimed at reducing child maltreatment and improving parental and child mental health. Together, these initiatives illustrate: (a) the relevance of adopting a definition of culture of prevention characterized by national commitments with expected shared contributions by governments and civil society, (b) the need to carefully consider the impact of context when promoting prevention initiatives in LMICs, (c) the iterative, non-linear, and multi-faceted nature of promoting a culture of prevention in LMICs, and (d) the importance of committing to cultural competence and shared leadership with local communities for the advancement of prevention science in LMICs. Implications for expanding a culture of prevention in LMICs are discussed
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Ammonia and nitrous oxide emission factors for excreta deposited by livestock and land-applied manure
Manure application to land and deposition of urine and dung by grazing animals are major sources of ammonia (NH3 ) and nitrous oxide (N2 O) emissions. Using data on NH3 and N2 O emissions following land-applied manures and excreta deposited during grazing, emission factors (EFs) disaggregated by climate zone were developed, and the effects of mitigation strategies were evaluated. The NH3 data represent emissions from cattle and swine manures in temperate wet climates, and the N2 O data include cattle, sheep, and swine manure emissions in temperate wet/dry and tropical wet/dry climates. The NH3 EFs for broadcast cattle solid manure and slurry were 0.03 and 0.24 kg NH3 -N kg-1 total N (TN), respectively, whereas the NH3 EF of broadcast swine slurry was 0.29. Emissions from both cattle and swine slurry were reduced between 46 and 62% with low-emissions application methods. Land application of cattle and swine manure in wet climates had EFs of 0.005 and 0.011 kg N2 O-N kg-1 TN, respectively, whereas in dry climates the EF for cattle manure was 0.0031. The N2 O EFs for cattle urine and dung in wet climates were 0.0095 and 0.002 kg N2 O-N kg-1 TN, respectively, which were three times greater than for dry climates. The N2 O EFs for sheep urine and dung in wet climates were 0.0043 and 0.0005, respectively. The use of nitrification inhibitors reduced emissions in swine manure, cattle urine/dung, and sheep urine by 45-63%. These enhanced EFs can improve national inventories; however, more data from poorly represented regions (e.g., Asia, Africa, South America) are needed
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DATAMAN: A global database of nitrous oxide and ammonia emission factors for excreta deposited by livestock and land-applied manure
Nitrous oxide (N2 O), ammonia (NH3 ), and methane (CH4 ) emissions from the manure management chain of livestock production systems are important contributors to greenhouse gases (GHGs) and NH3 emitted by human activities. Several studies have evaluated manure-related emissions and associated key variables at regional, national, or continental scales. However, there have been few studies focusing on the drivers of these emissions using a global dataset. An international project was created (DATAMAN) to develop a global database on GHG and NH3 emissions from the manure management chain (housing, storage, and field) to identify key variables influencing emissions and ultimately to refine emission factors (EFs) for future national GHG inventories and NH3 emission reporting. This paper describes the "field" database that focuses on N2 O and NH3 EFs from land-applied manure and excreta deposited by grazing livestock. We collated relevant information (EFs, manure characteristics, soil properties, and climatic conditions) from published peer-reviewed research, conference papers, and existing databases. The database, containing 5,632 observations compiled from 184 studies, was relatively evenly split between N2 O and NH3 (56 and 44% of the EF values, respectively). The N2 O data were derived from studies conducted in 21 countries on five continents, with New Zealand, the United Kingdom, Kenya, and Brazil representing 86% of the data. The NH3 data originated from studies conducted in 17 countries on four continents, with the United Kingdom, Denmark, Canada, and The Netherlands representing 79% of the data. Wet temperate climates represented 90% of the total database. The DATAMAN field database is available at http://www.dataman.co.nz
Brentuximab vedotin plus doxorubicin, vinblastine, and dacarbazine in patients with advanced-stage, classical Hodgkin lymphoma: a prespecified subgroup analysis of high-risk patients from the ECHELON-1 study
Approximately oneâthird of patients diagnosed with Hodgkin lymphoma presenting with Stage IV disease do not survive past 5 years. We present updated efficacy and safety analyses in highârisk patient subgroups, defined by Stage IV disease or International Prognostic Score (IPS) of 4-7, enrolled in the ECHELONâ1 study that compared brentuximab vedotin plus doxorubicin, vinblastine, and dacarbazine (A + AVD) versus doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD) as firstâline therapy after a median followâup of 37.1 months. Among patients treated with A + AVD (n = 664) or ABVD (n = 670), 64% had Stage IV disease and 26% had an IPS of 4-7. Patients with Stage IV disease treated with A + AVD showed consistent improvements in PFS at 3 years as assessed by investigator (hazard ratio [HR], 0.723; 95% confidence interval [CI], 0.537-0.973; p = 0.032). Similar improvements were seen in the subgroup of patients with IPS of 4-7 (HR, 0.588; 95% CI, 0.386-0.894; p = 0.012). The most common adverse events (AEs) in A + AVDâtreated versus ABVDâtreated patients with Stage IV disease were peripheral neuropathy (67% vs. 40%) and neutropenia (71% vs. 55%); in patients with IPS of 4-7, the most common AEs were peripheral neuropathy (69% vs. 45%), neutropenia (66% vs. 55%), and febrile neutropenia (23% vs. 9%), respectively. Patients in highârisk subgroups did not experience greater AE incidence or severity than patients in the total population. This updated analysis of ECHELONâ1 shows a favorable benefitârisk balance in highârisk patients
Tackling barriers to COVID-19 vaccine uptake in London: a mixed-methods evaluation
BACKGROUND: In response to the COVID-19 pandemic, the first vaccine was administered in December 2020 in England. However, vaccination uptake has historically been lower in London than in other English regions. METHODS: Mixed-methods: This comprised an analysis of cumulative percentage uptake across London between 8 December 2020 and 6 June 2021 by vaccine priority cohorts and ethnicity. We also undertook thematic analyses of uptake barriers, interventions to tackle these and key learning from a qualitative survey of 27 London local authority representatives, vaccine plans from London's five Integrated Care Systems and interviews with 38 London system representatives. RESULTS: Vaccine uptake was lower in Black ethnic (57-65% uptake) compared with the White British group (90% uptake). Trust was a critical issue, including mistrust in the vaccine itself and in authorities administering or promoting it. The balance between putative costs and benefits of vaccination created uptake barriers for zero-hour and shift workers. Intensive, targeted and 'hyper-local' initiatives, which sustained community relationships and were not constrained by administrative boundaries, helped tackle these barriers. CONCLUSIONS: The success of the national vaccination programme depended on conceding local autonomy, investing in responsive and long-term partnerships to engender trust through in-depth understanding of communities' beliefs
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