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https://www.readbyqxmd.com/read/29791951/nervous-system-infections-and-the-global-traveler
#1
Savina Reid, Haley Thompson, Kiran T Thakur
Neurological complications of infectious diseases are associated with high rates of morbidity and mortality. It is imperative that neurologists be up-to-date on current developments including typical and atypical presentations of neurological infections in travelers, diagnostic and treatment recommendations, and emerging pathogen resistance patterns to avoid fatal outcomes and long-term sequelae. This article will address concepts of emerging and reemerging infectious diseases, and will provide updates on the neurological manifestations of select emerging and reemerging infections, including Ebola virus, bacterial meningitis, enterovirus 71, Zika virus, cerebral malaria, and Japanese encephalitis...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29791942/emerging-viral-infections-and-their-impact-on-the-global-burden-of-neurological-disease
#2
Laura S Muñoz, Maria A Garcia, Eliza Gordon-Lipkin, Beatriz Parra, Carlos A Pardo
Emerging viral infections of the nervous system represent a major global public health concern in the 21st century. They are caused primarily by RNA viruses and are mostly associated with acute or subacute encephalitis. The spectrum of associated central or peripheral nervous system disorders is broad, and results either from a direct viral effect or due to the host immune responses against the infection. Emerging viral infections impose substantial neurological morbidity and mortality, particularly in low- and middle-income regions...
April 2018: Seminars in Neurology
https://www.readbyqxmd.com/read/29779846/simulation-based-training-in-ebola-personal-protective-equipment-for-healthcare-workers-experience-from-king-abdulaziz-university-hospital-in-saudi-arabia
#3
Jameel T Abualenain, Maha M Al-Alawi
BACKGROUND: Millions of Muslims from across the world gather annually to perform pilgrimage. This can import unusual communicable diseases such as Ebola. Communicable diseases with a high risk of mortality necessitate special training to master the required competency to avert transmission of infections. The efficacy of simulation-based training (SBT) has been shown in such circumstances. OBJECTIVE: We sought to develop an SBT program in Ebola Personal Protective Equipment (PPE) for all healthcare workers (HCWs)...
May 17, 2018: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/29766839/status-quality-and-specific-needs-of-ebola-virus-diagnostic-capacity-and-capability-in-laboratories-of-the-two-european-preparedness-laboratory-networks-emerge-and-evd-labnet
#4
Chantal B Reusken, Ramona Mögling, Pieter W Smit, Roland Grunow, Giuseppe Ippolito, Antonino Di Caro, Marion Koopmans
From December 2013 to March 2016, West Africa experienced the largest Ebola virus (EBOV) outbreak to date, leading to a European-wide activation of laboratory preparedness and response. At the end of the outbreak, laboratories associated with the two European preparedness networks of expert laboratories EMERGE JA and EVD-LabNet were invited to participate in an assessment of the response of European laboratories to the EBOV outbreak, to identify learning points and training needs to strengthen future outbreak responses...
May 2018: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29723168/malaria-surveillance-united-states-2015
#5
Kimberly E Mace, Paul M Arguin, Kathrine R Tan
PROBLEM/CONDITION: Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles species mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission...
May 4, 2018: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/29691416/virus-encoded-mirnas-in-ebola-virus-disease
#6
Janice Duy, Anna N Honko, Louis A Altamura, Sandra L Bixler, Suzanne Wollen-Roberts, Nadia Wauquier, Aileen O'Hearn, Eric M Mucker, Joshua C Johnson, Joshua D Shamblin, Justine Zelko, Miriam A Botto, James Bangura, Moinya Coomber, M Louise Pitt, Jean-Paul Gonzalez, Randal J Schoepp, Arthur J Goff, Timothy D Minogue
Ebola virus (EBOV) is a negative-strand RNA virus that replicates in the cytoplasm and causes an often-fatal hemorrhagic fever. EBOV, like other viruses, can reportedly encode its own microRNAs (miRNAs) to subvert host immune defenses. miRNAs are short noncoding RNAs that can regulate gene expression by hybridizing to multiple mRNAs, and viral miRNAs can enhance viral replication and infectivity by regulating host or viral genes. To date, only one EBOV miRNA has been examined in human infection. Here, we assayed mouse, rhesus macaque, cynomolgus macaque, and human samples infected with three EBOV variants for twelve computationally predicted viral miRNAs using RT-qPCR...
April 24, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29625392/the-current-landscape-of-nucleic-acid-tests-for-filovirus-detection
#7
REVIEW
David J Clark, John Tyson, Andrew D Sails, Sanjeev Krishna, Henry M Staines
Nucleic acid testing (NAT) for pathogenic filoviruses plays a key role in surveillance and to control the spread of infection. As they share clinical features with other pathogens, the initial spread of these viruses can be misdiagnosed. Tests that can identify a pathogen in the initial stages of infection are essential to control outbreaks. Since the Ebola virus disease (EVD) outbreak in 2014-2016 several tests have been developed that are faster than previous tests and more suited for field use. Furthermore, the ability to test for a range of pathogens simultaneously has been expanded to improve clinical pathway management of febrile syndromes...
March 22, 2018: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/29616631/revisiting-ebola-a-quiet-river-in-the-heart-of-africa
#8
J P Gonzalez, N Wauquier, T Vincent
In 1995, 20 years after the first known Ebola outbreak, one of us (JPG) wrote an editorial about Ebola Virus Disease that captured the knowledge and attitudes toward viral diseases of that time and discussed the future of viruses in our world. Now, 21 years later, in the wake of the West African Ebola pandemic of 2013-2016, and after 22 other Ebola outbreaks, we revisit the article to determine if knowledge, attitudes, and practices have changed. We conclude that the necessary infrastructures (surveillance, financial, treatment/preventative health) have improved with each outbreak, and knowledge of the virus (vaccines, therapies, diagnostics) has increased...
February 1, 2018: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/29593278/determining-the-effect-of-different-environmental-conditions-on-ebola-virus-viability-in-clinically-relevant-specimens
#9
Bernadett Palyi, Nora Magyar, Judit Henczko, Balint Szalai, Agnes Farkas, Thomas Strecker, Maria Takacs, Zoltan Kis
In 2013-2016, West Africa experienced the largest and longest Ebola virus disease outbreak ever documented. The wide geographic spread and magnitude of the outbreak often limited the timely and rapid testing of diagnostic samples from patients with suspected Ebola virus disease, raising questions regarding the optimal storage and shipping conditions of clinically relevant specimens, including EDTA-whole blood, plasma, capillary blood, urine and seminal fluid (associated with sexual transmission of the Ebola virus after recovery from the disease)...
March 29, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29489836/the-ebola-effect-in-guinea-2014-15-tangled-trends-of-malaria-care-in-children-under-five
#10
Delphin Kolie, Bienvenu S Camara, Alexandre Delamou, Abdoul H Béavogui, Veerle Hermans, Jeffrey K Edwards, Guido Benedetti, Claude P Muller, Johan van Griensven, Rony Zachariah
INTRODUCTION: The 2014-15 Ebola outbreak in West Africa was disruptive for the general health services in the affected countries. This study assessed the impact of the outbreak on the reported number and management of malaria in children under-five in rural Guinea. MATERIALS AND METHODS: A retrospective cross-sectional study was conducted in nineteen health centres in two rural, malaria-endemic health districts, one at the epicentre of the outbreak (Guéckédou) and one (Koubia) spared by Ebola...
2018: PloS One
https://www.readbyqxmd.com/read/29481881/use-of-the-filovirus-animal-non-clinical-group-fang-ebola-virus-immuno-assay-requires-fewer-study-participants-to-power-a-study-than-the-alpha-diagnostic-international-assay
#11
James Logue, Kaylie Tuznik, Dean Follmann, Greg Grandits, Jonathan Marchand, Cavan Reilly, Yeya Dit Sadio Sarro, James Pettitt, Eric J Stavale, Mosoka Fallah, Gene G Olinger, Fatorma K Bolay, Lisa E Hensley
As part of the scientific community's development of medical countermeasures against Ebola virus disease, optimization of standardized assays for product evaluation is paramount. The recent outbreak heightened awareness to the scarcity of available assays and limited information on performance and reproducibility. To evaluate the immunogenicity of vaccines entering Phase I-III trials and to identify survivors, two enzyme-linked immunosorbent assays, the Filovirus Animal Non-Clinical Group assay and the Alpha Diagnostics International assay, were evaluated for detection of immunoglobulin G against Ebola virus glycoprotein...
May 2018: Journal of Virological Methods
https://www.readbyqxmd.com/read/29452047/lessons-learned-from-ebola-vaccine-r-d-during-a-public-health-emergency
#12
Marie-Paule Kieny
In spite of a complete lack of Research and Development (R&D) preparedness, the 2013-2016 West-Africa Ebola experience demonstrated that it is possible to compress R&D timelines to less than a single year, from a more usual decade or longer. This is mostly to be credited to an unprecedented collaborative effort building on the availability of a small number of candidate diagnostic tests, drugs and vaccines that could be moved rapidly into the clinical phase evaluation. The World Health Organization (WHO) led international consultations and activities - including the organization of a successful Ebola vaccine efficacy trial in Guinea - as a contribution to the unprecedented global efforts to control the Ebola epidemic...
February 16, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29401479/detection-of-zika-virus-using-reverse-transcription-lamp-coupled-with-reverse-dot-blot-analysis-in-saliva
#13
Maite Sabalza, Rubina Yasmin, Cheryl A Barber, Talita Castro, Daniel Malamud, Beum Jun Kim, Hui Zhu, Richard A Montagna, William R Abrams
In recent years, there have been increasing numbers of infectious disease outbreaks that spread rapidly to population centers resulting from global travel, population vulnerabilities, environmental factors, and ecological disasters such as floods and earthquakes. Some examples of the recent outbreaks are the Ebola epidemic in West Africa, Middle East respiratory syndrome coronavirus (MERS-Co) in the Middle East, and the Zika outbreak through the Americas. We have created a generic protocol for detection of pathogen RNA and/or DNA using loop-mediated isothermal amplification (LAMP) and reverse dot-blot for detection (RDB) and processed automatically in a microfluidic device...
2018: PloS One
https://www.readbyqxmd.com/read/29356627/rebooting-bioresilience-a-multi-omics-approach-to-tackle-global-catastrophic-biological-risks-and-next-generation-biothreats
#14
Manousos E Kambouris, Yiannis Manoussopoulos, Maria Kantzanou, Aristea Velegraki, Georgios Gaitanis, Michalis Arabatzis, George P Patrinos
Global Catastrophic Biological Risks (GCBRs) refer to biological events-natural, deliberate, and accidental-of a global and lasting impact. This challenges the life scientists to raise their game on two hitherto neglected innovation frontiers: a veritable "futures" thinking to "think the unthinkable," and "systems thinking" so as to see both the trees and the forest when it comes to GCBRs. This innovation analysis article outlines the promise of Omics systems science biotechnologies, for example, to deploy rapid fire diagnostics for health security crises at GCBR level, possibly involving neopathogens and/or incurring epidemics (e...
January 2018: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/29332829/synchronous-detection-of-ebolavirus-conserved-rna-sequences-and-ebolavirus-encoded-mirna-like-fragment-based-on-a-zwitterionic-copper-ii-metal-organic-framework
#15
Gui-Hua Qiu, Zi-Hua Weng, Pei-Pei Hu, Wen-Jun Duan, Bao-Ping Xie, Bin Sun, Xiao-Yan Tang, Jin-Xiang Chen
From a three-dimensional (3D) metal-organic framework (MOF) of {[Cu(Cmdcp)(phen)(H2 O)]2 ·9H2 O}n (1, H3 CmdcpBr = N-carboxymethyl-(3,5-dicarboxyl)pyridinium bromide, phen = phenanthroline), a sensitive and selective fluorescence sensor has been developed for the simultaneous detection of ebolavirus conserved RNA sequences and ebolavirus-encoded microRNA-like (miRNA-like) fragment. The results from molecular dynamics simulation confirmed that MOF 1 absorbs carboxyfluorescein (FAM)-tagged and 5(6)-carboxyrhodamine, triethylammonium salt (ROX)-tagged probe ss-DNA (probe DNA, P-DNA) by π… π stacking and hydrogen bonding, as well as additional electrostatic interactions to form a sensing platform of P-DNAs@1 with quenched FAM and ROX fluorescence...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29304039/establishing-ebola-virus-disease-evd-diagnostics-using-genexpert-technology-at-a-mobile-laboratory-in-liberia-impact-on-outbreak-response-case-management-and-laboratory-systems-strengthening
#16
Philomena Raftery, Orla Condell, Christine Wasunna, Jonathan Kpaka, Ruth Zwizwai, Mahmood Nuha, Mosoka Fallah, Maxwell Freeman, Victoria Harris, Mark Miller, April Baller, Moses Massaquoi, Victoria Katawera, John Saindon, Philip Bemah, Esther Hamblion, Evelyn Castle, Desmond Williams, Alex Gasasira, Tolbert Nyenswah
The 2014-16 Ebola Virus Disease (EVD) outbreak in West Africa highlighted the necessity for readily available, accurate and rapid diagnostics. The magnitude of the outbreak and the re-emergence of clusters of EVD cases following the declaration of interrupted transmission in Liberia, reinforced the need for sustained diagnostics to support surveillance and emergency preparedness. We describe implementation of the Xpert Ebola Assay, a rapid molecular diagnostic test run on the GeneXpert platform, at a mobile laboratory in Liberia and the subsequent impact on EVD outbreak response, case management and laboratory system strengthening...
January 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29233140/selection-characterization-and-thermal-stabilization-of-llama-single-domain-antibodies-towards-ebola-virus-glycoprotein
#17
Jinny L Liu, Lisa C Shriver-Lake, George P Anderson, Dan Zabetakis, Ellen R Goldman
BACKGROUND: A key advantage of recombinant antibody technology is the ability to optimize and tailor reagents. Single domain antibodies (sdAbs), the recombinantly produced variable domains derived from camelid and shark heavy chain antibodies, provide advantages of stability and solubility and can be further engineered to enhance their properties. In this study, we generated sdAbs specific for Ebola virus envelope glycoprotein (GP) and increased their stability to expand their utility for use in austere locals...
December 12, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/29224715/ebola-virus-disease-biological-and-diagnostic-evolution-from-2014-to-2017
#18
REVIEW
A Mérens, C Bigaillon, D Delaune
The Ebola virus disease outbreak observed in West Africa from March 2014 to June 2016 has led to many fundamental and applied research works. Knowledge of this virus has substantially increased. Treatment of many patients in epidemic countries and a few imported cases in developed countries led to developing new diagnostic methods and to adapt laboratory organization and biosafety precautions to perform conventional biological analyses. Clinical and biological monitoring of patients infected with Ebola virus disease helped to determine severity criteria and bad prognosis markers...
March 2018: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/29190713/operational-evaluation-of-rapid-diagnostic-testing-for-ebola-virus-disease-in-guinean-laboratories
#19
Amanda VanSteelandt, Josephine Aho, Kristyn Franklin, Jacques Likofata, Jean Baptiste Kamgang, Sakoba Keita, Lamine Koivogui, N'Faly Magassouba, Lise D Martel, Anicet George Dahourou
BACKGROUND: Rapid Diagnostic Tests (RDTs) for Ebola Virus Disease (EVD) at the point of care have the potential to increase access and acceptability of EVD testing and the speed of patient isolation and secure burials for suspect cases. A pilot program for EVD RDTs in high risk areas of Guinea was introduced in October 2015. This paper presents concordance data between EVD RDTs and PCR testing in the field as well as an assessment of the acceptability, feasibility, and quality assurance of the RDT program...
2017: PloS One
https://www.readbyqxmd.com/read/29187639/identifying-spatio-temporal-dynamics-of-ebola-in-sierra-leone-using-virus-genomes
#20
Kyle B Gustafson, Joshua L Proctor
Containing the recent West African outbreak of Ebola virus (EBOV) required the deployment of substantial global resources. Despite recent progress in analysing and modelling EBOV epidemiological data, a complete characterization of the spatio-temporal spread of Ebola cases remains a challenge. In this work, we offer a novel perspective on the EBOV epidemic in Sierra Leone that uses individual virus genome sequences to inform population-level, spatial models. Calibrated to phylogenetic linkages of virus genomes, these spatial models provide unique insight into the disease mobility of EBOV in Sierra Leone without the need for human mobility data...
November 2017: Journal of the Royal Society, Interface
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