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"Kennedy, Stephen B"
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Monumental journey : the daguerreotypes of Girault de Prangey
by
Pinson, Stephen C., author
,
Girault de Prangey, 1804-1892. Works
,
Aubenas, Sylvie
in
Girault de Prangey, 1804-1892 Exhibitions.
,
Girault de Prangey, 1804-1892 Expositions.
,
Photography France History 19th century Exhibitions.
2019
In 1842, the pioneering French photographer Joseph-Philibert Girault de Prangey (1804-1892) set out eastward across the Mediterranean with a custom-built camera to explore ancient lands that were largely unknown to the Western world. This book is the first to fully consider the hundreds of daguerreotypes that resulted from his three-year journey, many of which were made using innovative techniques that fascinate photographers to this day. The images, including the first-known photographic documentation of significant locations, offer tangible evidence of historic sites, many of which have since been destroyed, in places such as Greece, Italy, Egypt, Turkey, Syria, and Jerusalem. They are remarkable and unparalleled portraits of a world gone by. Copiously illustrated and featuring a geographic glossary of the sites and images, Monumental Journey sheds new light on the arc of Girault's career, the vibrant orientalist milieu of 19th-century France that shaped his work, and his inventive contributions to the nascent field of photography. It introduces modern audiences to a brilliant yet enigmatic talent, as well as the stunning images, many published here for the time, that make a major contribution to the histories of both photography and eastern Mediterranean.--Exhibition: The Metropolitan Museum of Art, New York (30.10-12.05.2019); Musâee d'Orsay, Paris, France (17.06-13.10.2019).
Experimental Treatment of Ebola Virus Disease with Brincidofovir
2016
The nucleotide analogue brincidofovir was developed to prevent and treat infections caused by double-stranded DNA viruses. Based on in vitro data suggesting an antiviral effect against Ebola virus, brincidofovir was included in the World Health Organisation list of agents that should be prioritised for clinical evaluation in patients with Ebola virus disease (EVD) during the West African epidemic.
In this single-arm phase 2 trial conducted in Liberia, patients with laboratory-confirmed EVD (two months of age or older, enrolment bodyweight ≥50 kg) received oral brincidofovir 200 mg as a loading dose on day 0, followed by 100 mg brincidofovir on days 3, 7, 10, and 14. Bodyweight-adjusted dosing was used for patients weighing <50 kg at enrolment. The primary outcome was survival at Day 14 after the first dose of brincidofovir. Four patients were enrolled between 01 January 2015 and 31 January 2015. The trial was stopped following the decision by the manufacturer to terminate their program of development of brincidofovir for EVD. No Serious Adverse Reactions or Suspected Unexpected Serious Adverse Reactions were identified. All enrolled subjects died of an illness consistent with EVD.
Due to the small sample size it was not possible to determine the efficacy of brincidofovir for the treatment of EVD. The premature termination of the trial highlights the need to establish better practices for preclinical in-vitro and animal screening of therapeutics for potentially emerging epidemic infectious diseases prior to their use in patients.
Pan African Clinical Trials Registry PACTR201411000939962.
Journal Article
The impact of the 2014 Ebola epidemic on HIV disease burden and outcomes in Liberia West Africa
by
Wachekwa, Ian
,
Fallah, Mosoka
,
Reilly, Cavan
in
Acquired immune deficiency syndrome
,
Adult
,
AIDS
2021
Detailed longitudinal studies of HIV-positive individuals in West Africa are lacking. Here the HIV prevalence, incidence, all-cause mortality, and the proportion of individuals receiving treatment with cART in two cohorts of participants in Ebola-related studies are described.
Individuals of all ages were enrolled and followed at four sites in the area of Monrovia, Liberia.
Two cohorts identified in response to the Ebola epidemic are described to provide insights into the current state of the HIV epidemic. HIV testing was performed at baseline for participants in both cohorts and during follow-up in one cohort.
Prevalence and incidence of HIV (prevalence of 3.1% for women and 1.4% for men and incidence of 3.3 per 1,000) were higher in these cohorts compared to 2018 national estimates (prevalence of 1.3% and incidence of 0.39 per 1,000). Most participants testing positive did not know their status prior to testing. Of those who knew they were HIV positive, 7.9% reported being on antiretroviral treatment. The death rate among those with HIV was 12.3% compared to 1.9% in HIV-negative individuals (adjusted odds ratio of 6.87). While higher levels of d-dimer were associated with increased mortality, this was not specific to those with HIV, however lower hemoglobin levels were associated with increased mortality among those with HIV.
These findings point to a need to perform further research studies aimed at fulfilling these knowledge gaps and address current shortcomings in the provision of care for those living with HIV in Liberia.
Journal Article
Constructing, validating, and updating machine learning models to predict survival in children with Ebola Virus Disease
by
Gainey, Monique
,
Chu, Tzu-Chun
,
Mbong, Eta N.
in
Analysis
,
Biology and Life Sciences
,
Care and treatment
2022
Background Ebola Virus Disease (EVD) causes high case fatality rates (CFRs) in young children, yet there are limited data focusing on predicting mortality in pediatric patients. Here we present machine learning-derived prognostic models to predict clinical outcomes in children infected with Ebola virus. Methods Using retrospective data from the Ebola Data Platform, we investigated children with EVD from the West African EVD outbreak in 2014-2016. Elastic net regularization was used to create a prognostic model for EVD mortality. In addition to external validation with data from the 2018-2020 EVD epidemic in the Democratic Republic of the Congo (DRC), we updated the model using selected serum biomarkers. Findings Pediatric EVD mortality was significantly associated with younger age, lower PCR cycle threshold (Ct) values, unexplained bleeding, respiratory distress, bone/muscle pain, anorexia, dysphagia, and diarrhea. These variables were combined to develop the newly described EVD Prognosis in Children (EPiC) predictive model. The area under the receiver operating characteristic curve (AUC) for EPiC was 0.77 (95% CI: 0.74-0.81) in the West Africa derivation dataset and 0.76 (95% CI: 0.64-0.88) in the DRC validation dataset. Updating the model with peak aspartate aminotransferase (AST) or creatinine kinase (CK) measured within the first 48 hours after admission increased the AUC to 0.90 (0.77-1.00) and 0.87 (0.74-1.00), respectively. Conclusion The novel EPiC prognostic model that incorporates clinical information and commonly used biochemical tests, such as AST and CK, can be used to predict mortality in children with EVD.
Journal Article
Risk Prediction Score for Pediatric Patients with Suspected Ebola Virus Disease
2022
Rapid diagnostic tools for children with Ebola virus disease (EVD) are needed to expedite isolation and treatment. To evaluate a predictive diagnostic tool, we examined retrospective data (2014-2015) from the International Medical Corps Ebola Treatment Centers in West Africa. We incorporated statistically derived candidate predictors into a 7-point Pediatric Ebola Risk Score. Evidence of bleeding or having known or no known Ebola contacts was positively associated with an EVD diagnosis, whereas abdominal pain was negatively associated. Model discrimination using area under the curve (AUC) was 0.87, which outperforms the World Health Organization criteria (AUC 0.56). External validation, performed by using data from International Medical Corps Ebola Treatment Centers in the Democratic Republic of the Congo during 2018-2019, showed an AUC of 0.70. External validation showed that discrimination achieved by using World Health Organization criteria was similar; however, the Pediatric Ebola Risk Score is simpler to use.
Journal Article
Association between oral antimalarial medication administration and mortality among patients with Ebola virus disease: a multisite cohort study
by
Yam, Derrick
,
Woldemichael, Dayan
,
Abel, Logan
in
Analgesics
,
Antimalarials
,
Antimalarials - therapeutic use
2022
Background
Empiric antimalarial treatment is a component of protocol-based management of Ebola virus disease (EVD), yet this approach has limited clinical evidence for patient-centered benefits.
Methods
This retrospective cohort study evaluated the association between antimalarial treatment and mortality among patients with confirmed EVD. The data was collected from five International Medical Corps operated Ebola Treatment Units (ETUs) in Sierra Leone and Liberia from 2014 through 2015. The standardized protocol used for patient care included empiric oral treatment with combination artemether and lumefantrine, twice daily for three days; however, only a subset of patients received treatment due to resource variability. The outcome of interest was mortality, comparing patients treated with oral antimalarials within 48-h of admission to those not treated. Analysis was conducted with logistic regression to generate adjusted odds ratios (aORs). Multivariable analyses controlled for ETU country, malaria rapid diagnostic test result, age, EVD cycle threshold value, symptoms of bleeding, diarrhea, dysphagia and dyspnea, and additional standard clinical treatments.
Results
Among the 424 cases analyzed, 376 (88.7%) received early oral antimalarials. Across all cases, mortality occurred in 57.5% (244). In comparing unadjusted mortality prevalence, early antimalarial treated cases yielded 55.1% mortality versus 77.1% mortality for those untreated (p = 0.005). Multivariable analysis demonstrated evidence of reduced aOR for mortality with early oral antimalarial treatment versus non-treatment (aOR = 0.34, 95% Confidence Interval: 0.12, 0.92, p = 0.039).
Conclusion
Early oral antimalarial treatment in an EVD outbreak was associated with reduced mortality. Further study is warranted to investigate this association between early oral antimalarial treatment and mortality in EVD patients.
Journal Article
The Ebola epidemic: a transformative moment for global health
2015
The devastating effects of the current epidemic of Ebola virus disease in western Africa have put the global health response in acute focus. The index case is believed to have been a 2-year-old child in Gueckedou, Guinea, who died in December 2013. By late February 2014, Guinea, Liberia and Sierra Leone were in the midst of a full-blown and complex global health emergency. The response by multilateral and humanitarian organizations has been laudable and -- at times -- heroic. Much of the worst affected region is recovering from civil conflicts. This region is characterized by weak systems of government and health-care delivery, high rates of illiteracy, poverty and distrust of the government and extreme population mobility across porous, artificial boundaries. A more coordinated, strategic and proactive response is urgently needed.
Journal Article
Measuring child survival for the Millennium Development Goals in Africa: what have we learned and what more is needed to evaluate the Sustainable Development Goals?
2020
Reducing child mortality is a key global health challenge. We examined reasons for greater or lesser success in meeting under-five mortality rate reductions, i.e. Millennium Development Goal #4, between 1990 and 2015 in Sub-Saharan Africa where child mortality remains high. We first examined factors associated with child mortality from all World Health Organization African Region nations during the Millennium Development Goal period. This analysis was followed by case studies of the facilitators and barriers to Millennium Development Goal #4 in four countries - Kenya, Liberia, Zambia, and Zimbabwe. Quantitative indicators, policy documents, and qualitative interviews and focus groups were collected from each country to examine factors within and across countries related to child mortality. We found familiar themes that highlighted the need for both specific services (e.g. primary care access, emergency obstetric and neonatal care) and general management (e.g. strong health governance and leadership, increasing community health workers, quality of care). We also identified methodological opportunities and challenges to assessing progress in child health, which can provide insights to similar efforts during the Sustainable Development Goal period. Specifically, it is important for countries to adapt general international goals and measurements to their national context, considering baseline mortality rates and health information systems, to develop country-specific goals. It will also be critical to develop more rigorous measurement tools and indicators to accurately characterize maternal, neonatal, and child health systems, particularly in the area of governance and leadership. Valuable lessons can be learned from Millennium Development Goal successes and failures, as well as how they are evaluated. As countries seek to lower child mortality further during the Sustainable Development Goal period, it will be necessary to prioritize and support countries in quantitative and qualitative data collection to assess and contextualize progress, identifying areas needing improvement.
Journal Article
Correction to: Partnership for Research on Ebola VACcination (PREVAC): protocol of a randomized, double-blind, placebo-controlled phase 2 clinical trial evaluating three vaccine strategies against Ebola in healthy volunteers in four West African countries
by
Beavogui, Abdoul Habib
,
Kirchoff, Matthew
,
Watson-Jones, Deborah
in
Biomedicine
,
Correction
,
Health Sciences
2021
Journal Article
Randomized Trial of Vaccines for Zaire Ebola Virus Disease
2022
In two randomized trials of Zaire Ebola vaccines, safety and immune responses in adults and children were assessed for three regimens with two different vaccines. All three induced immune responses lasting at least 1 year.
Journal Article