The removal of inactivated Marburg virus (MARV) material from a biosafety level 4 (BSL-4) setting is a critical first step to enable downstream analyses at lower containment levels. The following method presents a highly sensitive approach for efficacy testing of virus inactivation without the loss of a low titer virus that may otherwise be masked by cytotoxic effects of the cells. This protocol outlines the procedure used to validate the inactivation of MARV samples for viral RNA extraction in cell culture, demonstrating accurate contact time needed for exposure, minimal loss of virus titers that may be present in minute quantities, and the removal of toxic elements to cells.
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Guidance reconciliation and practice question prioritization for a World Health Organization's Ebola and Marburg Disease guideline.
J Clin Epidemiol
December 2024
Department of Internal Medicine, American University of Beirut, Beirut, Lebanon; Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.
Objective: To describe the processes of reconciling overlapping guidance and prioritizing practice questions for a World Health Organization (WHO) guideline on Infection Prevention and Control (IPC) for Ebola and Marburg disease.
Methods: This work involved the reconciliation of guidance, the generation of potential practice questions and the prioritization of those questions. Contributors included the WHO secretariat, the WHO steering group, the guideline methodologists, and the guideline development group (GDG).
Evidence-Based Guidance for One Health Preparedness, Prevention, and Response Strategies to Marburg Virus Disease Outbreaks.
Diseases
December 2024
Rwanda Biomedical Center (RBC), Kigali 7162, Rwanda.
Objectives: Marburg virus disease (MVD) is on the WHO list for pandemic-prone pathogens. The current outbreak in Rwanda provides an opportunity to map outbreaks and generate information to inform policymaking, resource mobilization, and guide the implementation of cost-effective response strategies.
Methods: We synthesized available information about MVD to build holistic, up-to-date evidence to inform policymakers, public health leaders, and healthcare and public health services providers in their development and implementation of cost-effective preparedness, prevention, and control measures.
To be or not to be phosphorylated: Understanding the role of Ebola virus nucleoprotein in the dynamic interplay with the transcriptional activator VP30 and the host phosphatase PP2A-B56.
Emerg Microbes Infect
December 2024
Institute of Virology, Philipps-Universität Marburg, 35043 Marburg, Germany.
Ebola virus (EBOV) transcription is essentially regulated via dynamic dephosphorylation of its viral transcription activator VP30 by the host phosphatase PP2A. The nucleoprotein NP has emerged as a third key player in the regulation of this process by recruiting both the regulatory subunit B56 of PP2A and its substrate VP30 to initiate VP30 dephosphorylation and hence viral transcription. Both binding sites are located in close proximity to each other in NP's C-terminal disordered region.
View Article and Find Full Text PDFMarburg Virus Reaches Rwanda: How Close Are We to a Vaccine Solution?
Int J Infect Dis
December 2024
Department of General Medicine and Surgery, College of Medicine and Health Sciences, University of Rwanda, Kigali, Rwanda. Electronic address:
Marburg virus disease (MVD) is a highly virulent and often fatal disease caused by the Marburg virus, a member of the Filoviridae family, closely related to the Ebola virus. Historically, outbreaks have been sporadic but lethal across various African countries, with high case fatality rates (CFRs). In 2023, significant outbreaks occurred in Tanzania and Equatorial Guinea, with CFRs of 62.
View Article and Find Full Text PDFA comprehensive RNA virome identified in the oyster Magallana gigas reveals the intricate network of virus sharing between seawater and mollusks.
Microbiome
December 2024
College of Food Science and Technology, Shanghai Ocean University, Shanghai, China.
Background: As a globally farmed oyster species, Magallana gigas has garnered significant attention due to the contaminated RNA viruses that have caused illness in humans. However, limited knowledge is available on the bioaccumulation status and overall diversity of RNA virome in the M. gigas digestive tissues (DTs).
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