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https://www.readbyqxmd.com/read/28817732/enhanced-inflammation-in-new-zealand-white-rabbits-when-mers-cov-reinfection-occurs-in-the-absence-of-neutralizing-antibody
#1
Katherine V Houser, Andrew J Broadbent, Lisa Gretebeck, Leatrice Vogel, Elaine W Lamirande, Troy Sutton, Kevin W Bock, Mahnaz Minai, Marlene Orandle, Ian N Moore, Kanta Subbarao
The Middle East respiratory syndrome coronavirus (MERS-CoV) is a zoonotic betacoronavirus that was first detected in humans in 2012 as a cause of severe acute respiratory disease. As of July 28, 2017, there have been 2,040 confirmed cases with 712 reported deaths. While many infections have been fatal, there have also been a large number of mild or asymptomatic cases discovered through monitoring and contact tracing. New Zealand white rabbits are a possible model for asymptomatic infection with MERS-CoV. In order to discover more about non-lethal infections and to learn whether a single infection with MERS-CoV would protect against reinfection, we inoculated rabbits with MERS-CoV and monitored the antibody and inflammatory response...
August 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28813689/large-scale-machine-learning-of-media-outlets-for-understanding-public-reactions-to-nation-wide-viral-infection-outbreaks
#2
Sungwoon Choi, Jangho Lee, Min-Gyu Kang, Hyeyoung Min, Yoon-Seok Chang, Sungroh Yoon
From May to July 2015, there was a nation-wide outbreak of Middle East respiratory syndrome (MERS) in Korea. MERS is caused by MERS-CoV, an enveloped, positive-sense, single stranded RNA virus belonging to the family Coronaviridae. Despite expert opinions that the danger of MERS might be exaggerated, there was an overreaction by the public according to the Korean mass media, which led to a noticeable reduction in social and economic activities during the outbreak. To explain this phenomenon, we presumed that machine learning-based analysis of media outlets would be helpful and collected a number of Korean mass media articles and short-text comments produced during the 10-week outbreak...
August 13, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28807998/immunogenicity-and-structures-of-a-rationally-designed-prefusion-mers-cov-spike-antigen
#3
Jesper Pallesen, Nianshuang Wang, Kizzmekia S Corbett, Daniel Wrapp, Robert N Kirchdoerfer, Hannah L Turner, Christopher A Cottrell, Michelle M Becker, Lingshu Wang, Wei Shi, Wing-Pui Kong, Erica L Andres, Arminja N Kettenbach, Mark R Denison, James D Chappell, Barney S Graham, Andrew B Ward, Jason S McLellan
Middle East respiratory syndrome coronavirus (MERS-CoV) is a lineage C betacoronavirus that since its emergence in 2012 has caused outbreaks in human populations with case-fatality rates of ∼36%. As in other coronaviruses, the spike (S) glycoprotein of MERS-CoV mediates receptor recognition and membrane fusion and is the primary target of the humoral immune response during infection. Here we use structure-based design to develop a generalizable strategy for retaining coronavirus S proteins in the antigenically optimal prefusion conformation and demonstrate that our engineered immunogen is able to elicit high neutralizing antibody titers against MERS-CoV...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28807812/evaluation-and-clinical-validation-of-two-field-deployable-reverse-transcription-insulated-isothermal-pcr-assays-for-the-detection-of-the-middle-east-respiratory-syndrome-coronavirus
#4
Yun Young Go, Yeon-Sook Kim, Shinhye Cheon, Sangwoo Nam, Keun Bon Ku, Meehyein Kim, Nam Hyuk Cho, Hyun Park, Pei-Yu Alison Lee, Yu-Chun Lin, Yun-Long Tsai, Hwa-Tang Thomas Wang, Udeni B R Balasuriya
Middle East respiratory syndrome (MERS) is an emerging zoonotic viral respiratory disease that was first identified in Saudi Arabia in 2012. In 2015, the largest MERS outbreak outside of the Middle East region occurred in the Republic of Korea. The rapid nosocomial transmission of MERS-coronavirus (MERS-CoV) in Korean healthcare settings highlighted the importance and urgent need for a rapid and reliable on-site diagnostic assay to implement effective control and preventive measures. Here, we describe the evaluation and validation of two newly developed reverse transcription-insulated isothermal PCR (RT-iiPCR) methods targeting the ORF1a and upE genes of MERS-CoV...
August 11, 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28805465/what-we-are-watching-top-global-infectious-disease-threats-2013-2016-an-update-from-cdc-s-global-disease-detection-operations-center
#5
Kira A Christian, A Danielle Iuliano, Timothy M Uyeki, Eric D Mintz, Stuart T Nichol, Pierre Rollin, J Erin Staples, Ray R Arthur
To better track public health events in areas where the public health system is unable or unwilling to report the event to appropriate public health authorities, agencies can conduct event-based surveillance, which is defined as the organized collection, monitoring, assessment, and interpretation of unstructured information regarding public health events that may represent an acute risk to public health. The US Centers for Disease Control and Prevention's (CDC's) Global Disease Detection Operations Center (GDDOC) was created in 2007 to serve as CDC's platform dedicated to conducting worldwide event-based surveillance, which is now highlighted as part of the "detect" element of the Global Health Security Agenda (GHSA)...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28805464/advancing-preparedness-for-highly-hazardous-contagious-diseases-admitting-10-simulated-patients-with-mers-cov
#6
Angela Vasa, Philip W Smith, Michelle Schwedhelm, Theodore J Cieslak, John Lowe, Christopher J Kratochvil, Elizabeth L Beam, Kate Boulter, Angela Hewlett
The Ebola outbreak of 2014-2016 highlighted the need for the development of a more robust healthcare infrastructure in the United States to provide isolation care for patients infected with a highly hazardous contagious disease. Routine exercises and skills practice are required to effectively and safely prepare care teams to confidently treat this special population of patients. The Nebraska Biocontainment Unit (NBU) at Nebraska Medicine in Omaha has been conducting exercises since 2005 when the unit was opened...
August 14, 2017: Health Security
https://www.readbyqxmd.com/read/28794876/the-history-and-epidemiology-of-middle-east-respiratory-syndrome-corona-virus
#7
REVIEW
Aisha M Al-Osail, Marwan J Al-Wazzah
Corona viruses cause common cold, and infections caused by corona viruses are generally self-resolving. During the last 4 years, corona viruses have become the most important viruses worldwide because of the occurrence of several recent deaths caused by corona viruses in Saudi Arabia. Spread of the infection occurred worldwide; however, most cases of mortality have occurred in the Middle East. Owing to the predominance of outbreaks in the Middle Eastern countries, the virus was renamed a Middle East respiratory syndrome corona virus (MERS-CoV) by the Corona virus Study Group...
2017: Multidisciplinary Respiratory Medicine
https://www.readbyqxmd.com/read/28774161/suggestions-on-improvement-of-infectious-disease-law-and-regulations
#8
Mijeong Park
Purpose: The study's perspective is through examining an enactment for the New amendment for legislation, to make proposals for a more rational and concrete basis in the interpretation and application of the Korean legal regime in global infectious disease emergency situations. Methods: The Republic of Korea reported its first laboratory-confirmed case of Middle East Respiratory Syndrome Corona Virus (MERS-CoV) on 20 May 2015. Since the first index case, Korean public health authorities enforced many public health measures that were not authorized in the law...
July 25, 2017: Epidemiology and Health
https://www.readbyqxmd.com/read/28769010/comparative-genomic-analysis-mers-cov-isolated-from-humans-and-camels-with-special-reference-to-virus-encoded-helicase
#9
Mohamed Alnazawi, Abdallah Altaher, Mahmoud Kandeel
Middle East Respiratory Syndrome Coronavirus (MERS CoV) is a new emerging viral disease characterized by high fatality rate. Understanding MERS CoV genetic aspects and codon usage pattern is important to understand MERS CoV survival, adaptation, evolution, resistance to innate immunity, and help in finding the unique aspects of the virus for future drug discovery experiments. In this work, we provide comprehensive analysis of 238 MERS CoV full genomes comprised of human (hMERS) and camel (cMERS) isolates of the virus...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28759649/the-tetraspanin-cd9-facilitates-mers-coronavirus-entry-by-scaffolding-host-cell-receptors-and-proteases
#10
James T Earnest, Michael P Hantak, Kun Li, Paul B McCray, Stanley Perlman, Tom Gallagher
Infection by enveloped coronaviruses (CoVs) initiates with viral spike (S) proteins binding to cellular receptors, and is followed by proteolytic cleavage of receptor-bound S proteins, which prompts S protein-mediated virus-cell membrane fusion. Infection therefore requires close proximity of receptors and proteases. We considered whether tetraspanins, scaffolding proteins known to facilitate CoV infections, hold receptors and proteases together on cell membranes. Using knockout cell lines, we found that the tetraspanin CD9, but not the tetraspanin CD81, formed cell-surface complexes of dipeptidyl peptidase 4 (DPP4), the MERS-CoV receptor, and the type II transmembrane serine protease (TTSP) member TMPRSS2, a CoV-activating protease...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28759623/spatial-modelling-of-contribution-of-individual-level-risk-factors-for-mortality-from-middle-east-respiratory-syndrome-coronavirus-in-the-arabian-peninsula
#11
Oyelola A Adegboye, Ezra Gayawan, Fahad Hanna
BACKGROUND: Middle East respiratory syndrome coronavirus is a contagious respiratory pathogen that is contracted via close contact with an infected subject. Transmission of the pathogen has occurred through animal-to-human contact at first followed by human-to-human contact within families and health care facilities. DATA AND METHODS: This study is based on a retrospective analysis of the Middle East respiratory syndrome coronavirus outbreak in the Kingdom of Saudi Arabia between June 2012 and July 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28754024/a-comprehensive-review-of-common-bacterial-parasitic-and-viral-zoonoses-at-the-human-animal-interface-in-egypt
#12
REVIEW
Yosra A Helmy, Hosny El-Adawy, Elsayed M Abdelwhab
Egypt has a unique geographical location connecting the three old-world continents Africa, Asia and Europe. It is the country with the highest population density in the Middle East, Northern Africa and the Mediterranean basin. This review summarizes the prevalence, reservoirs, sources of human infection and control regimes of common bacterial, parasitic and viral zoonoses in animals and humans in Egypt. There is a gap of knowledge conerning the epidemiology of zoonotic diseases at the human-animal interface in different localities in Egypt...
July 21, 2017: Pathogens
https://www.readbyqxmd.com/read/28748673/neurological-complications-during-treatment-of-middle-east-respiratory-syndrome
#13
Jee Eun Kim, Jae Hyeok Heo, Hye Ok Kim, Sook Hee Song, Sang Soon Park, Tai Hwan Park, Jin Young Ahn, Min Ky Kim, Jae Phil Choi
BACKGROUND AND PURPOSE: Middle East respiratory syndrome (MERS) has a high mortality rate and pandemic potential. However, the neurological manifestations of MERS have rarely been reported since it first emerged in 2012. METHODS: We evaluated four patients with laboratory-confirmed MERS coronavirus (CoV) infections who showed neurological complications during MERS treatment. These 4 patients were from a cohort of 23 patients who were treated at a single designated hospital during the 2015 outbreak in the Republic of Korea...
July 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/28747502/permissivity-of-dpp4-orthologs-to-mers-coronavirus-is-governed-by-glycosylation-and-other-complex-determinants
#14
Kayla M Peck, Trevor Scobey, Jesica Swanstrom, Kara L Jensen, Christina L Burch, Ralph S Baric, Mark T Heise
Middle East respiratory syndrome coronavirus (MERS-CoV) utilizes dipeptidyl peptidase 4 (DPP4) as an entry receptor. While bat, camel, and human DPP4 support MERS-CoV infection, several DPP4 orthologs, including mouse, ferret, hamster, and guinea pig, do not. Previous work revealed that glycosylation of mouse DPP4 plays a role in blocking MERS-CoV infection. Here, we test whether glycosylation also acts as a determinant of permissivity for ferret, hamster, and guinea pig DPP4. We find that while glycosylation plays an important role in these orthologs, additional sequence and structural determinants impact their ability to act as functional receptors for MERS-CoV...
July 26, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28734432/outbreak-of-middle-east-respiratory-syndrome-coronavirus-causes-high-fatality-after-cardiac-operations
#15
Rakan I Nazer
Middle East respiratory syndrome-coronavirus (MERS-CoV) resembles a severe form of community-acquired pneumonia initially reported in Saudi Arabia in 2012. The MERS-CoV epidemic poses a big challenge because of its high mortality. In January 2015, a patient who was potentially incubating MERS-CoV arrived from the emergency department of another hospital and was admitted with acute coronary syndrome. This resulted in an outbreak in the cardiac surgery ward that caused the deaths of 5 of 6 patients who had undergone cardiac operations...
August 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28728926/diagnostic-delays-in-537-symptomatic-cases-of-middle-east-respiratory-syndrome-coronavirus-infection-in-saudi-arabia
#16
Anwar E Ahmed
BACKGROUND: Although the literature indicates that patient delays in seeking medical support for Middle East respiratory syndrome coronavirus (MERS-CoV) infections are associated with poor clinical outcomes, delays in the diagnosis itself remain poorly understood in these patients. This study aimed to determine the median time interval from symptom onset to a confirmed diagnosis and to identify the potential predictors of this interval in Saudi Arabian MERS patients. METHODS: This was a retrospective study of patients with confirmed MERS who were publicly reported by the World Health Organization (WHO)...
July 17, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28719257/no-serologic-evidence-of-middle-east-respiratory-syndrome-coronavirus-infection-among-camel-farmers-exposed-to-highly-seropositive-camel-herds-a-household-linked-study-kenya-2013
#17
Peninah Munyua, Victor Max Corman, Austine Bitek, Eric Osoro, Benjamin Meyer, Marcel A Müller, Erik Lattwein, S M Thumbi, Rees Murithi, Marc-Alain Widdowson, Christian Drosten, M Kariuki Njenga
AbstractHigh seroprevalence of Middle East respiratory syndrome coronavirus (MERS-CoV) among camels has been reported in Kenya and other countries in Africa. To date, the only report of MERS-CoV seropositivity among humans in Kenya is of two livestock keepers with no known contact with camels. We assessed whether persons exposed to seropositive camels at household level had serological evidence of infection. In 2013, 760 human and 879 camel sera were collected from 275 and 85 households respectively in Marsabit County...
June 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28712204/middle-east-respiratory-syndrome-corona-virus-alert-verification-in-mirpur-azad-kashmir
#18
Mumtaz Ali Khan, Muhammad Ishaq, Mujeeb Ur Rehman, Asim Altaf, Mirza Aamir Baig, Safdar Rana, Jaleel Kamran, Muazam Abbas Ranjha, Jawad Asgher Rana
BACKGROUND: Middle East Respiratory-Corona virus (MERS-CoV), SARS like virus, identified in September 2012 in Middle-East. February 2013, an elderly man, who visited Pakistan and KSA, was confirmed as MRS-CoV in UK. A team visited Mirpur to assess current and past SARI trends in major indoor facilities, to explore possible contact of the patient with known or suspected SARI case during his stay in Pakistan and enlist close contacts. METHODS: Review of indoor records in hospitals, interviews with relatives & physicians and active contact tracing using operational case definition...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28709419/the-clinical-and-virological-features-of-the-first-imported-case-causing-mers-cov-outbreak-in-south-korea-2015
#19
Ji Yeon Lee, You-Jin Kim, Eun Hee Chung, Dae-Won Kim, Ina Jeong, Yeonjae Kim, Mi-Ran Yun, Sung Soon Kim, Gayeon Kim, Joon-Sung Joh
BACKGROUND: In 2015, the largest outbreak of Middle East respiratory syndrome coronavirus (MERS-CoV) infection outside the Middle East occurred in South Korea. We summarized the epidemiological, clinical, and laboratory findings of the first Korean case of MERS-CoV and analyzed whole-genome sequences of MERS-CoV derived from the patient. CASE PRESENTATION: A 68-year-old man developed fever and myalgia 7 days after returning to Korea, following a 10-day trip to the Middle East...
July 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28703921/estimating-and-modelling-the-transmissibility-of-middle-east-respiratory-syndrome-corona-virus-during-the-2015-outbreak-in-the-republic-of-korea
#20
Xu-Sheng Zhang, Richard Pebody, Andre Charlett, Daniela de Angelis, Paul Birrell, Hunseok Kang, Marc Baguelin, Yoon Hong Choi
BACKGROUND: Emerging respiratory infections represent a significant public health threat. Because of their novelty, there are limited measures available to control their early spread. Learning from past outbreaks is important for future preparation. The MERS-CoV 2015 outbreak in the Republic of Korea (ROK) provides one such opportunity. OBJECTIVES: We demonstrated through quantitative methodologies how to estimate MERS-CoV's transmissibility and identified the effective countermeasures that stopped its spread...
July 13, 2017: Influenza and Other Respiratory Viruses
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