Uveal Involvement in Marburg Virus Disease B
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Chikungunya Fever: Epidemiology, Clinical Syndrome, Pathogenesis
Antiviral Research 99 (2013) 345–370 Contents lists available at SciVerse ScienceDirect Antiviral Research journal homepage: www.elsevier.com/locate/antiviral Review Chikungunya fever: Epidemiology, clinical syndrome, pathogenesis and therapy ⇑ Simon-Djamel Thiberville a,b, , Nanikaly Moyen a,b, Laurence Dupuis-Maguiraga c,d, Antoine Nougairede a,b, Ernest A. Gould a,b, Pierre Roques c,d, Xavier de Lamballerie a,b a UMR_D 190 ‘‘Emergence des Pathologies Virales’’ (Aix-Marseille Univ. IRD French Institute of Research for Development EHESP French School of Public Health), Marseille, France b University Hospital Institute for Infectious Disease and Tropical Medicine, Marseille, France c CEA, Division of Immuno-Virologie, Institute of Emerging Diseases and Innovative Therapies, Fontenay-aux-Roses, France d UMR E1, University Paris Sud 11, Orsay, France article info abstract Article history: Chikungunya virus (CHIKV) is the aetiological agent of the mosquito-borne disease chikungunya fever, a Received 7 April 2013 debilitating arthritic disease that, during the past 7 years, has caused immeasurable morbidity and some Revised 21 May 2013 mortality in humans, including newborn babies, following its emergence and dispersal out of Africa to the Accepted 18 June 2013 Indian Ocean islands and Asia. Since the first reports of its existence in Africa in the 1950s, more than Available online 28 June 2013 1500 scientific publications on the different aspects of the disease and its causative agent have been pro- duced. Analysis of these publications shows that, following a number of studies in the 1960s and 1970s, Keywords: and in the absence of autochthonous cases in developed countries, the interest of the scientific commu- Chikungunya virus nity remained low. -
As a Model of Human Ebola Virus Infection
Viruses 2012, 4, 2400-2416; doi:10.3390/v4102400 OPEN ACCESS viruses ISSN 1999-4915 www.mdpi.com/journal/viruses Review The Baboon (Papio spp.) as a Model of Human Ebola Virus Infection Donna L. Perry 1,*, Laura Bollinger 1 and Gary L.White 2 1 Integrated Research Facility, Division of Clinical Research, NIAID, NIH, Frederick, MD, USA; E-Mail: [email protected] 2 Department of Pathology, University of Oklahoma Baboon Research Resource, University of Oklahoma, Ft. Reno Science Park, OK, USA; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +1-301-631-7249; Fax: +1-301-619-5029. Received: 8 October 2012; in revised form: 17 October 2012 / Accepted: 17 October 2012 / Published: 23 October 2012 Abstract: Baboons are susceptible to natural Ebola virus (EBOV) infection and share 96% genetic homology with humans. Despite these characteristics, baboons have rarely been utilized as experimental models of human EBOV infection to evaluate the efficacy of prophylactics and therapeutics in the United States. This review will summarize what is known about the pathogenesis of EBOV infection in baboons compared to EBOV infection in humans and other Old World nonhuman primates. In addition, we will discuss how closely the baboon model recapitulates human EBOV infection. We will also review some of the housing requirements and behavioral attributes of baboons compared to other Old World nonhuman primates. Due to the lack of data available on the pathogenesis of Marburg virus (MARV) infection in baboons, discussion of the pathogenesis of MARV infection in baboons will be limited. -
The Hemorrhagic Fevers of Southern Africa South African Institute For
THE YALE JOURNAL OF BIOLOGY AND MEDICINE 55 (1982), 207-212 The Hemorrhagic Fevers of Southern Africa with Special Reference to Studies in the South African Institute for Medical Research J.H.S. GEAR, M.D. National Institute for Virology, Johannesburg, South Africa Received April 19, 1982 In this review of studies on the hemorrhagic fevers of Southern Africa carried out in the South African Institute for Medical Research, attention has been called to occurrence of meningococcal septicemia in recruits to the mining industry and South African Army, to cases of staphylococcal and streptococcal septicemia with hemorrhagic manifestations, and to the occurrence of plague which, in its septicemic form, may cause a hemorrhagic state. "Onyalai," a bleeding disease in tropical Africa, often fatal, was related to profound throm- bocytopenia possibly following administration of toxic witch doctor medicine. Spirochetal diseases, and rickettsial diseases in their severe forms, are often manifested with hemorrhagic complications. Of enterovirus infections, Coxsackie B viruses occasionally caused severe hepa- titis associated with bleeding, especially in newborn babies. Cases of hemorrhagic fever presenting in February-March, 1975 are described. The first out- break was due to Marburg virus disease and the second, which included seven fatal cases, was caused by Rift Valley fever virus. In recent cases of hemorrhagic fever a variety of infective organisms have been incriminated including bacterial infections, rickettsial diseases, and virus diseases, including Herpesvirus hominis; in one patient, the hemorrhagic state was related to rubella. A boy who died in a hemorrhagic state was found to have Congo fever; another pa- tient who died of severe bleeding from the lungs was infected with Leptospira canicola, and two patients who developed a hemorrhagic state after a safari trip in Northern Botswana were infected with Trypanosoma rhodesiense. -
Viral Hemorrhagic Fevers and Bioterrorism
What you need to know about . Viral Hemorrhagic Fevers and Bioterrorism What are viral hemorrhagic fevers? How are viral hemorrhagic fevers Viral hemorrhagic fevers (VHFs) are a spread? group of illnesses caused by several distinct In nature, viruses causing hemorrhagic fever families of viruses. In general the term typically are passed from mice, rats, fleas “viral hemorrhagic fever” describes severe and ticks to humans. People can be infected problems affecting several organ systems when they come in contact with urine, fecal in the body. Typically, the entire system of ma�er, saliva or other body fluids from blood vessels is damaged, and the body has infected rodents. Fleas and ticks transmit the problems regulating itself. Symptoms o�en viruses when they bite a person or when a include bleeding, but the bleeding itself is person crushes a tick. Hosts for some viruses rarely life-threatening. VHFs are caused by such as Ebola and Marburg are not known. viruses of four families: Some viruses such as Ebola, Marburg and Lassa can be spread from person to person • Arenavirus including Lassa fever and by direct contact with infected blood or Argentine, Bolivian, Brazilian and organs or indirectly through contact with Venezuelan hemorrhagic fevers; objects such as syringes or needles that are • Filovirus including Ebola and Marburg; contaminated with infected body fluids. • Bunyavirus including Hantavirus and Ri� Valley Fever; What are the symptoms? • Flavivirus including yellow fever and Symptoms vary with the different virus dengue fever. families, but first signs o�en include sudden fever, weakness, muscle pain, tiredness, Can viral hemorrhagic fevers be used headache and sore throat. -
Viral Hemorrhagic Fevers (Lassa, Marburg, Ebola, Crimean-Congo, and Other Emerging Viruses)
Viral Hemorrhagic Fevers (Lassa, Marburg, Ebola, Crimean-Congo, and other emerging viruses) What Are They? Viral hemorrhagic fevers are a group of illnesses causes by several viruses. These viruses affect multiple organs in the body by damaging the vascular (blood vessel) system. The bleeding or hemorrhaging caused by the virus is not usually life threatening but damage to organ systems in the body can range from mild to deadly. The viruses responsible for this type of illness include Lassa, Marburg, Ebola, and Crimean-Congo hemorrhagic fever. How can you get it? These emerging viral hemorrhagic fevers are presumed to be animal borne (zoonotic) and can be transmitted to humans through contact. Infected humans can spread the virus to each other through contact with contaminated objects or blood. The risk of acquiring these diseases is typically restricted to the geographic regions where the virus is found. Given global travel, rare cases have been reported outside of the host region. These rare cases are probably the greatest form of the occupational threat to fire fighters. Lassa Associated with specific rodents Found in West Africa Marburg Transmitted by African fruit bat Found in Africa Ebola Transmitted by unknown animal Found in Africa Crimean-Congo Tick-borne virus Found in Africa, Asia, Europe What are the symptoms? The time to develop symptoms varies by virus but is between 2 to 21 days after exposure to the Ebola virus. The signs and symptoms of viral hemorrhagic fever vary depending on the virus but include: Flu-like symptoms o Fever o Fatigue o Muscle aches Exhaustion Nausea and/or vomiting Abdominal pain Shock Seizures Delirium Bleeding Organ failure The most common complication of Lassa fever is deafness. -
Ebola in the DRC: Report September 2020
The Congo Research Group (CRG) is an independent, non-profit research project dedicated to understanding the violence that affects millions of Congolese. We carry out rigorous research on different aspects of the conflict in the Democratic Republic of the Congo. All of our research is informed by deep historical and social knowledge of the problem at hand. We are based at the Center on International Cooperation at New York University. All of our publications, blogs and podcasts are available at: www.congoresearchgroup.org and www.gecongo.org This report was made possible thanks to funding from the European Union through its Instrument contributing to Stability and Peace. Cover photo: 17 January 2019, Beni, North Kivu region, Democratic Republic of Congo. A doctor talks with Julie, in her cube at the Ebola Treatment Center. Photo: World Bank / Vincent Tremeau Ebola in the DRC: Report September 2020 Table of Contents Executive Summary ...................................................................................................................................... 4 Introduction ................................................................................................................................................. 5 Ebola: From Neglected Tropical Disease to Global Health Security Threat ....................................................... 7 Medicine in DRC: From Colonial Tool to Site of Extraction .............................................................................. 8 The Building of a Parallel Health System .....................................................................................................11 -
1 Lujo Viral Hemorrhagic Fever: Considering Diagnostic Capacity And
1 Lujo Viral Hemorrhagic Fever: Considering Diagnostic Capacity and 2 Preparedness in the Wake of Recent Ebola and Zika Virus Outbreaks 3 4 Dr Edgar Simulundu1,, Prof Aaron S Mweene1, Dr Katendi Changula1, Dr Mwaka 5 Monze2, Dr Elizabeth Chizema3, Dr Peter Mwaba3, Prof Ayato Takada1,4,5, Prof 6 Guiseppe Ippolito6, Dr Francis Kasolo7, Prof Alimuddin Zumla8,9, Dr Matthew Bates 7 8,9,10* 8 9 1 Department of Disease Control, School of Veterinary Medicine, University of Zambia, 10 Lusaka, Zambia 11 2 University Teaching Hospital & National Virology Reference Laboratory, Lusaka, Zambia 12 3 Ministry of Health, Republic of Zambia 13 4 Division of Global Epidemiology, Hokkaido University Research Center for Zoonosis 14 Control, Sapporo, Japan 15 5 Global Institution for Collaborative Research and Education, Hokkaido University, Sapporo, 16 Japan 17 6 Lazzaro Spallanzani National Institute for Infectious Diseases, IRCCS, Rome, Italy 18 7 World Health Organization, WHO Africa, Brazzaville, Republic of Congo 19 8 Department of Infection, Division of Infection and Immunity, University College London, 20 U.K 21 9 University of Zambia – University College London Research & Training Programme 22 (www.unza-uclms.org), University Teaching Hospital, Lusaka, Zambia 23 10 HerpeZ (www.herpez.org), University Teaching Hospital, Lusaka, Zambia 24 25 *Corresponding author: Dr. Matthew Bates 26 Address: UNZA-UCLMS Research & Training Programme, University Teaching Hospital, 27 Lusaka, Zambia, RW1X 1 28 Email: [email protected]; Phone: +260974044708 29 30 2 31 Abstract 32 Lujo virus is a novel old world arenavirus identified in Southern Africa in 2008 as the 33 cause of a viral hemorrhagic fever (VHF) characterized by nosocomial transmission 34 with a high case fatality rate of 80% (4/5 cases). -
Orthohantaviruses Belonging to Three Phylogroups All Inhibit Apoptosis in Infected Target Cells
www.nature.com/scientificreports OPEN Orthohantaviruses belonging to three phylogroups all inhibit apoptosis in infected target cells Received: 13 July 2018 Carles Solà-Riera1, Shawon Gupta1,2, Hans-Gustaf Ljunggren1 & Jonas Klingström 1 Accepted: 3 December 2018 Orthohantaviruses, previously known as hantaviruses, are zoonotic viruses that can cause hantavirus Published: xx xx xxxx pulmonary syndrome (HPS) and hemorrhagic fever with renal syndrome (HFRS) in humans. The HPS-causing Andes virus (ANDV) and the HFRS-causing Hantaan virus (HTNV) have anti-apoptotic efects. To investigate if this represents a general feature of orthohantaviruses, we analysed the capacity of six diferent orthohantaviruses – belonging to three distinct phylogroups and representing both pathogenic and non-pathogenic viruses – to inhibit apoptosis in infected cells. Primary human endothelial cells were infected with ANDV, HTNV, the HFRS-causing Puumala virus (PUUV) and Seoul virus, as well as the putative non-pathogenic Prospect Hill virus and Tula virus. Infected cells were then exposed to the apoptosis-inducing chemical staurosporine or to activated human NK cells exhibiting a high cytotoxic potential. Strikingly, all orthohantaviruses inhibited apoptosis in both settings. Moreover, we show that the nucleocapsid (N) protein from all examined orthohantaviruses are potential targets for caspase-3 and granzyme B. Recombinant N protein from ANDV, PUUV and the HFRS-causing Dobrava virus strongly inhibited granzyme B activity and also, to certain extent, caspase-3 activity. Taken together, this study demonstrates that six diferent orthohantaviruses inhibit apoptosis, suggesting this to be a general feature of orthohantaviruses likely serving as a mechanism of viral immune evasion. Orthohantaviruses, of the order Bunyavirales and previously known as hantaviruses, are small single-stranded negative-sense RNA viruses with a tri-segmented genome (S, M and L segments) encoding four to fve proteins. -
Ebola Virus Disease and Clinical Care Part I: History, Transmission, and Clinical Presentation
Ebola Virus Disease and Clinical Care Part I: History, Transmission, and Clinical Presentation This lecture is on Ebola virus disease (EVD) and clinical care. This is part one of a three-part lecture on this topic. Preparing Healthcare Workers to Work in Ebola Treatment Units (ETUs) in Africa This lecture will focus on EVD in the West African setting. Ebola Virus Disease and Clinical Care: The training and information you receive in this course will Part I: History, Transmission, and Clinical not cover the use of certain interventions such as intubation Presentation or dialysis which are not available in West African Ebola Treatment Units (ETUs). You will need supplemental training This presentation is current as of December 2014. This presentation contains materials from Centers for Disease Control and to care for patients appropriately in countries where advanced Prevention (CDC), Médecins Sans Frontières (MSF), and World Health Organization (WHO). care is available. U.S. Department of Health and Human Services U.S. Department of Health and Human Services Centers for Disease Control and Prevention Centers for Disease Control and Prevention version 12.03.2014 The learning objectives for this lecture are to: Learning Objectives ▶ Describe the routes of Ebola virus transmission Describe the routes of Ebola virus transmission Explain when and how patients are infectious ▶ Explain when and how patients are infectious Describe the clinical features of patients with Ebola ▶ Describe screening criteria for Ebola virus disease Describe the clinical features of patients with Ebola (EVD) used in West Africa Explain how to identify patients with suspected ▶ Describe screening criteria for EVD used in West Africa EVD who present to the ETU ▶ Explain how to identify patients with suspected EVD who present to the ETU This presentation contains materials from CDC, MSF, and WHO 2 A number of different viruses cause viral hemorrhagic fever. -
Mapping the Risk and Distribution of Epidemics in the WHO African Region
Mapping the Risk and Distribution of Epidemics in the WHO African Region A Technical Report May 2016 WHO/AFRO Library Cataloguing – in – Publication Data Mapping the Risk and Distribution of Epidemics in the WHO African Region: a technical report 1. Disease Outbreaks – statistics and numerical data 2. Epidemics – statistics and numerical data 3. Communicable Diseases – statistics and numerical data 4. Risk Assessment – supply and distribution – statistics and numerical data 5. Data collection – utilization 6. Africa I. Work Health Organization. Regional Office for Africa II. Title ISBN: 978-9290233084-4 (NLM Classification : WA 105) © WHO Regional Office for Africa, 2016 Publications of the World Health Organization enjoy copyright protection in accordance with the provisions of Protocol 2 of the Universal Copyright Convention. All rights reserved. Copies of this publication may be obtained from the Library, WHO Regional Office for Africa, P.O. Box 6, Brazzaville, Republic of Congo (Tel: +47 241 39100; Fax: +47 241 39507; E-mail: [email protected]). Requests for permission to reproduce or translate this publication – whether for sale or for non-commercial distribution – should be sent to the same address. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement. The mention of specific companies or of certain manufacturers’ products does not imply that they are endorsed or recommended by the World Health Organization in preference to others of a similar nature that are not mentioned. -
Human Monkeypox in Sierra Leone After 44-Year Absence Of
RESEARCH LETTERS Acknowledgments Human Monkeypox in We thank Linda Northrup for English editing. We thank the patient for consenting to publication of her clinical data. Sierra Leone after 44-Year Absence of Reported Cases About the Author Dr. Amsilli is an infectious and tropical diseases physician. Mary G. Reynolds, Nadia Wauquier, Yu Li, Her research interests are emerging infectious diseases and Panayampalli Subbian Satheshkumar, medicine quality. Lansana D. Kanneh, Benjamin Monroe, Jacob Maikere, Gbessay Saffa, Jean-Paul Gonzalez, Joseph Fair, References 1. Barutta L, Ferrigno D, Melchio R, Borretta V, Bracco C, Darin S. Carroll, Amara Jambai, Foday Dafae, Brignone C, et al. Hepatic brucelloma. Lancet Infect Dis. Sheik Humarr Khan, Lina M. Moses 2013;13:987–93. http://dx.doi.org/10.1016/S1473-3099 Author affiliations: Centers for Disease Control and Prevention, (13)70197-X 2. Franco MP, Mulder M, Gilman RH, Smits HL. Human Atlanta, Georgia, USA (M.G. Reynolds, Y. Li, P.S. Satheshkumar, brucellosis. Lancet Infect Dis. 2007;7:775–86. http://dx.doi.org/ B. Monroe, D.S. Carroll); MRI Global–Global Health Surveillance 10.1016/S1473-3099(07)70286-4 and Diagnostics, Gaithersburg, Maryland, USA (N. Wauquier); 3. Ariza J, Pigrau C, Cañas C, Marrón A, Martínez F, Almirante B, Kenema Government Hospital, Kenema, Sierra Leone et al. Current understanding and management of chronic hepatosplenic suppurative brucellosis. Clin Infect Dis. (L.D. Kanneh, S.H. Khan); Médecins Sans Frontières, Brussels, 2001;32:1024–33. http://dx.doi.org/10.1086/319608 Belgium (J. Maikere); Ministry of Health and Sanitation, Bo, 4. Santé Publique France, Institut National de Veille Sanitaire. -
Mark Woolhouse University of Edinburgh, UK
WHAT WILL CAUSE THE NEXT PANDEMIC? Mark Woolhouse University of Edinburgh, UK With thanks to: Feifei Zhang, Lu Lu, Liam Brierley, Alistair Morrison, Tara Wagner-Gamble and many others WHAT WILL CAUSE THE NEXT PANDEMIC? The 2018 list of disease priorities needing urgent R&D attention comprises: Crimean-Congo haemorrhagic fever (CCHF) Ebola virus disease and Marburg virus disease Lassa fever MERS-CoV and SARS Nipah and henipaviral diseases Rift Valley fever (RVF) The possibility that a serious Zika international epidemic could be Disease X caused by a pathogen currently unknown to cause human disease Candidates included “highly pathogenic coronaviral diseases other than MERS and SARS” Mark Woolhouse, University of Edinburgh, September 2020 WHAT WILL CAUSE THE NEXT PANDEMIC? • Virus discovery • Known viruses • Disease X • Virus diversity • SARS-CoV-2 WHAT WILL CAUSE THE NEXT PANDEMIC? • Virus discovery • Known viruses • Disease X • Virus diversity • SARS-CoV-2 HUMAN PATHOGEN SURVEY • Systematic review of primary literature • Formal methodology → Taylor et al. (2001) Phil. Trans. B • 70% EIDs are zoonotic • 70% EIDs caused by RNA viruses 214 recognised RNA virus species (to 2015) 55 genera 21 families (+1 unassigned genus) Mark Woolhouse, University of Edinburgh, September 2020 RNA VIRUS DISCOVERY Mark Woolhouse, University of Edinburgh, September 2020 Woolhouse & Brierley (2018) Scientific Data PREDICTING WHERE Risk maps created using a boosted regression tree model with 33 predictors. Models trained on 223 discoveries worldwide and 83 in China. Top predictors: GDP/GDP growth > urbanisation > climate > biodiversity. Discoveries since 2015 indicated (black triangles) and location of Wuhan shown. Mark Woolhouse, University of Edinburgh, September 2020 Zhang et al.