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Viral hemorrhagic fever

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https://www.readbyqxmd.com/read/29233140/selection-characterization-and-thermal-stabilization-of-llama-single-domain-antibodies-towards-ebola-virus-glycoprotein
#1
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/29227420/us-state-public-health-departments-special-pathogen-planning
#2
Jocelyn J Herstein, Paul D Biddinger, Shawn G Gibbs, Aurora B Le, Katelyn C Jelden, Angela L Hewlett, John J Lowe
CONTEXT: US state public health departments played key roles in planning for and responding to confirmed and suspected cases of Ebola virus disease (EVD) during the 2014-2016 outbreak, including designating select hospitals as high-level isolation units (HLIUs) for EVD treatment in conjunction with the Centers for Disease Control and Prevention. OBJECTIVE: To identify existing guidelines and perspectives of state health departments pertaining to the management and transport of patients with EVD and other highly hazardous communicable diseases (HHCDs)...
December 7, 2017: Journal of Public Health Management and Practice: JPHMP
https://www.readbyqxmd.com/read/29216924/dengue-hemorrhagic-fever-complicated-with-acute-liver-failure-a-case-report
#3
Chamara Dalugama, Indika Bandara Gawarammana
BACKGROUND: Dengue is a common arboviral infection with a clinically diverse spectrum of presentations. Although hepatic dysfunction is commonly identified in patients will dengue illness, acute liver failure is rare. The etiopathogenesis of hepatic dysfunction is multifactorial and related to direct viral invasion of hepatocytes, immunological factors and hypoxia particularly in cases of shock in dengue hemorrhagic fever. Ideal management of dengue-related hepatic dysfunction and acute liver failure is still debated...
December 8, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29198972/analysis-of-codon-usage-bias-of-crimean-congo-hemorrhagic-fever-virus-and-its-adaptation-to-hosts
#4
Siddiq Ur Rahman, Xiaoting Yao, Xiangchen Li, Dekun Chen, Shiheng Tao
Crimean-Congo hemorrhagic fever virus (CCHFV) is a negative-sense, single stranded RNA virus with a three-segmented genome that belongs to the genus Nairovirus within the family Bunyaviridae. CCHFV uses Hyalomma ticks as a vector to infect humans with a wide range of clinical signs, from asymptomatic to Zika-like syndrome. Despite significant progress in genomic analyses, the influences of viral relationships with different hosts on overall viral fitness, survival, and evading the host's immune systems remain unknown...
November 30, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29187231/post-encephalitic-parkinsonism-following-dengue-viral-infection
#5
B V K M Bopeththa, U Ralapanawa
BACKGROUND: Incidence of dengue fever as well as dengue hemorrhagic fever is increasing in Sri Lanka especially among elderly population. As the number of cases is rising, rare complications of dengue illness also can be seen in clinical practice when compared to the past few years. Prompt identification and treatment of such complications is challenging due to lack of awareness and unavailability of standard treatment. CASE PRESENTATION: 69 years old man presented with acute onset fever and was diagnosed as having dengue illness...
November 29, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29181956/infectious-diseases-in-poland-in-2015
#6
Małgorzata Sadkowska-Todys, Andrzej Zieliński, Mirosław P. Czarkowski
PURPOSE OF THE STUDY: This is the next annual analysis of the situation of infectious and parasitic diseases in Poland in 2015 within the framework of the Epidemiological Chronicle of Przegląd Epidemiologiczny - Epidemiological Review. Its purpose is to identify potential threats to the health of populations from infectious diseases occurring in Poland with reference to other parts of the globe. MATERIAL AND METHODS: This paper is an introduction to more detailed studies of the epidemiological situation of selected infectious diseases and summarizes the results of the surveillance of infectious diseases in Poland in 2015...
2017: Przegla̧d Epidemiologiczny
https://www.readbyqxmd.com/read/29165231/sequence-optimized-real-time-reverse-transcription-polymerase-chain-reaction-assay-for-detection-of-crimean-congo-hemorrhagic-fever-virus
#7
Jeffrey W Koehler, Korey L Delp, Adrienne T Hall, Scott P Olschner, Brian J Kearney, Aura R Garrison, Louis A Altamura, Cynthia A Rossi, Timothy D Minogue
Crimean-Congo hemorrhagic fever virus (CCHFV) is a tick-borne virus of the genus Nairovirus within the family Bunyaviridae. Infection can result in general myalgia, fever, and headache with some patients developing hemorrhagic fever with mortality rates ranging from 5% to 30%. CCHFV has a wide geographic range that includes Africa, Asia, the Middle East, and Europe with nucleotide sequence variation approaching 20% across the three negative-sense RNA genome segments. While phylogenetic clustering generally aligns with geographic origin of individual strains, distribution can be wide due to tick/CCHFV dispersion via migrating birds...
November 20, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/29159591/evaluation-of-the-associations-between-endothelial-dysfunction-inflammation-and-coagulation-in-crimean-congo-hemorrhagic-fever-patients
#8
Halef Okan Doğan, Seyit Ali Büyüktuna, Sercan Kapancik, Sevtap Bakir
Crimean-Congo hemorrhagic fever (CCHF) is a tick-borne zoonotic viral disease. The aim of this study was to evaluate the association between inflammation, coagulation and endothelial dysfunction in CCHF. The study population consisted of 40 patients and 50 healthy controls. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), endocan, high sensitive C-reactive protein (hsCRP), international normalized ratio (INR), prothrombin time (PT), activated partial thromboplastin time (aPTT) and platelets values were determined in blood samples...
November 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29159319/co-circulation-of-crimean-congo-hemorrhagic-fever-virus-strains-asia-1-and-2-between-the-border-of-iran-and-pakistan
#9
Nariman Shahhosseini, Ahmad Jafarbekloo, Zakkyeh Telmadarraiy, Sadegh Chinikar, Ali Haeri, Norbert Nowotny, Martin H Groschup, Anthony R Fooks, Faezeh Faghihi
Crimean-Congo Hemorrhagic Fever (CCHF) is a tick-borne viral disease that is transmitted by numerous species of ticks, which serve both as a reservoir and vector of CCHF virus (CCHFV). Molecular and serological tests were undertaken on hard ticks (Ixodidae spp.) and samples from livestock were collected in 2015 from Chabahar County in Southeast Iran. Using RT-PCR, the ticks were tested for the presence of CCHFV. In addition, seven livestock were serologically tested for the presence of IgG antibodies using an ELISA test...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29155823/development-and-preliminary-evaluation-of-a-multiplexed-amplification-and-next-generation-sequencing-method-for-viral-hemorrhagic-fever-diagnostics
#10
Annika Brinkmann, Koray Ergünay, Aleksandar Radonić, Zeliha Kocak Tufan, Cristina Domingo, Andreas Nitsche
BACKGROUND: We describe the development and evaluation of a novel method for targeted amplification and Next Generation Sequencing (NGS)-based identification of viral hemorrhagic fever (VHF) agents and assess the feasibility of this approach in diagnostics. METHODOLOGY: An ultrahigh-multiplex panel was designed with primers to amplify all known variants of VHF-associated viruses and relevant controls. The performance of the panel was evaluated via serially quantified nucleic acids from Yellow fever virus, Rift Valley fever virus, Crimean-Congo hemorrhagic fever (CCHF) virus, Ebola virus, Junin virus and Chikungunya virus in a semiconductor-based sequencing platform...
November 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29142540/clinical-audit-of-dengue-related-deaths-in-2011-mayo-hospital-lahore-pakistan
#11
Somia Iqtadar, Nabeel Akbar, Mehreen Mehmood, Sajid Abaidullah
Background and Objective: Dengue infection has evolved into an epidemic during last few years in Pakistan and has been associated with poor outcomes. Literature with respect to mortality risk factors in Dengue infection is not sufficient. This compelled us to conduct this study to find out major contributory factors to death in patients with dengue viral infection at one of Asia's ancient hospital setting with an aim to recognize complications at earliest and improve case management in future...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29128377/viral-hemorrhagic-fever-in-the-tropics-report-from-the-task-force-on-tropical-diseases-by-the-world-federation-of-societies-of-intensive-and-critical-care-medicine
#12
REVIEW
Jorge Luis Hidalgo Marroquin, Guy A Richards, Juan Ignacio Silesky Jiménez, Tim Baker, Pravin Amin
Viral hemorrhagic fevers (VHFs) are a group of illnesses caused by four families of viruses namely Arenaviruses, Filoviruses, Bunyaviruses, and Flaviviruses. Humans are not the natural reservoir for any of these organisms and acquire the disease through vectors from animal reservoirs. In some conditions human to human transmission is possible increasing the risk to healthy individuals in the vicinity, more so to Health Care Workers (HCW). The pathogenesis of VHF, though poorly understood, varies according to the viruses involved...
November 4, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29117665/application-of-therapeutic-plasma-exchange-in-patients-having-severe-fever-with-thrombocytopenia-syndrome
#13
Jeong Rae Yoo, Sun Hyung Kim, Young Ree Kim, Keun Hwa Lee, Won Sup Oh, Sang Taek Heo
Background/Aims: Severe fever with thrombocytopenia syndrome (SFTS) is a viral hemorrhagic fever with a high fatality rate. However, effective treatments for SFTS cases not responded to supportive therapy have not been established. Herein, we introduced the therapeutic plasma exchange (TPE) in SFTS patients in a tertiary hospital between 2013 and 2015. Methods: TPE was performed in patients with rapidly progressing SFTS. Clinical, laboratory, and virological parameters were compared before and after TPE...
November 10, 2017: Korean Journal of Internal Medicine
https://www.readbyqxmd.com/read/29093311/experiences-of-response-measures-against-the-4-suspected-cases-of-ebola-virus-disease-from-west-africa-in-the-national-center-for-global-health-and-medicine-tokyo-japan
#14
Satoshi Kutsuna, Kei Yamamoto, Nozomi Takeshita, Kayoko Hayakawa, Yasuyuki Kato, Shuzo Kanagawa, Yuko Sugiki, Norio Ohmagari
In Japan, infectious diseases are classified into 4 types based on how contagious and severe the pathogens are, and Ebola virus disease (EVD) is categorized as a category 1 infectious disease. National Center for Global Health and Medicine in Tokyo, Japan, is designated as a specified hospital for category 1 infectious disease patients, and has experienced 4 probable cases of EVD from West Africa. Even after the end of the outbreak in West Africa, we should continue to pay attention for new EVD outbreaks. To increase the number of the infectious disease specialist with the proper knowledge of viral hemorrhagic fever including EVD is a common problem for infectious disease physicians working in Japan, the academic society, and the government...
October 31, 2017: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29091325/dynamics-of-viral-load-in-crimean-congo-hemorrhagic-fever
#15
Imran Hasanoglu, Rahmet Guner, Ahmet Carhan, Zeliha Kocak Tufan, Dilek Yagci Caglayik, Gul Ruhsar Yilmaz, Mehmet Akin Tasyaran
Crimean Congo hemorrhagic fever (CCHF) is a viral zoonotic disease with high mortality rate. There are only a few studies on viral load in CCHF. In our study, we revealed the dynamics of viral load and its relationship with mortality in early phase of the disease. A total of 138 serum samples were collected from 23 patients. All patients had positive PCR for CCHF on admission. Serum samples were obtained daily from all patients for the first 6 days of hospitalization and stored at -80°C for viral load measurement...
November 1, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/29070682/epistastic-interactions-within-the-jun%C3%A3-n-virus-envelope-glycoprotein-complex-provide-an-evolutionary-barrier-to-reversion-in-the-live-attenuated-candid-1-vaccine
#16
Joanne York, Jack H Nunberg
The Candid#1 strain of Junín virus was developed using a conventional attenuation strategy of serial passage in non-host animals and cultured cells. The live-attenuated Candid#1 vaccine is used in Argentina to protect at-risk individuals against Argentine hemorrhagic fever, but has not been licensed in the United States. Recent studies have revealed that Candid#1 attenuation is entirely dependent on a phenylalanine-to-isoleucine substitution at position 427 in the fusion subunit (GP2) of the viral envelope glycoprotein complex (GPC), thereby raising concerns regarding the potential for reversion to virulence...
October 25, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29070018/hemorrhagic-hypopyon-as-presenting-feature-of-intravascular-lymphoma-a-case-report
#17
Andrew Winegarner, Noriyasu Hashida, Shizuka Koh, Kohji Nishida
BACKGROUND: Herpes uveitis has been previously reported to present with hyphema, but hemorrhagic hypopyon is rarely reported as a herpetic uveitis manifestation. We report a case of herpes simplex virus (HSV) presenting with hemorrhagic hypopyon, and speculate on the underlying pathophysiology with relation to an intravascular lymphoma which was subsequently diagnosed as a result. CASE PRESENTATION: We present a case wherein a 62-year-old Japanese rheumatoid arthritis woman, with HSV uveitis, presented with hemorrhagic hypopyon in the anterior chamber and a fever with photophobia...
October 25, 2017: BMC Ophthalmology
https://www.readbyqxmd.com/read/29067074/profile-of-hepatic-involvement-in-dengue-infections-in-adult-pakistani-population
#18
Somia Iqtadar, Nabeel Akbar, Naima Huma, Fawad Ahmad Randhawa
OBJECTIVES: To estimate the range of hepatic involvement in dengue infections by assessing clinical and biochemical profile of adult dengue infected patients. METHODS: Serologically confirmed 220 adult cases of dengue infections admitted to Mayo hospital from June 2013 to November 2013 were classified as having dengue fever, dengue haemorragic fever and dengue shock syndrome. The frequency and range of bilirubin, liver enzymes derangement and presence of liver enlargement in each group was calculated and further stratified according to age and gender...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29051241/genome-sequences-of-crimean-congo-hemorrhagic-fever-virus-strains-isolated-in-south-africa-namibia-and-turkey
#19
Marko Zivcec, Cesar G Albarino, Lisa I W Guerrero, Thomas G Ksiazek, Stuart T Nichol, Robert Swanepoel, Pierre E Rollin, Christina F Spiropoulou
We report here the full-length sequences of 16 historical isolates of Crimean-Congo hemorrhagic fever orthonairovirus (CCHFV) obtained in Turkey, Namibia, and South Africa. The strains may be useful for future work to develop molecular diagnostics or viral evolution studies.
October 19, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29030708/lethal-infection-of-embryonated-chicken-eggs-by-hazara-virus-a-model-for-crimean-congo-hemorrhagic-fever-virus
#20
Yusuke Matsumoto, Keisuke Ohta, Machiko Nishio
Hazara virus (HAZV) is a member of the genus Orthonairovirus of the family Nairoviridae. HAZV is closely related to Crimean-Congo hemorrhagic fever virus but differs in that it is non-pathogenic to humans. To establish an infection model system, we tested whether embryonated chicken eggs, which are classically used for evaluating viral pathogenicity, are susceptible to HAZV infection. We demonstrated that HAZV replicates well in embryonated chicken eggs and kills 100% of the embryos. This can be a valuable tool to evaluate the lethality of nairoviruses in a biosafety level 2 laboratory...
October 14, 2017: Archives of Virology
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