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Emerging Infectious Disease

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https://www.readbyqxmd.com/read/28219161/-advances-on-epidemiological-research-of-human-infections-with-novel-avian-influenza-a-h7n9-virus
#1
Q M Wang, S L Liu, E F Chen
Human infections with novel avian influenza A(H7N9)virus was an emerging infectious disease discovered in March, 2013. As of June30, 2016, 770 cases of H7N9 were reported in worldwide including 315 deaths with 40.9% of high case fatality rate. Yangtze River Delta and Pearl River Delta were the high-prevalence area. Formerly, the cases of H7N9 were concentrated on the municipalities. However, most of the case-patients were from smaller cities or rural areas nowadays. The H7N9 human infections mainly occurred in winter and spring every waves as similar as seasonal and H5N1 human infections...
February 6, 2017: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/28218665/matrix-metalloproteinases-as-regulators-of-periodontal-inflammation
#2
REVIEW
Cavalla Franco, Hernández-Ríos Patricia, Sorsa Timo, Biguetti Claudia, Hernández Marcela
Periodontitis are infectious diseases characterized by immune-mediated destruction of periodontal supporting tissues and tooth loss. Matrix metalloproteinases (MMPs) are key proteases involved in destructive periodontal diseases. The study and interest in MMP has been fuelled by emerging evidence demonstrating the broad spectrum of molecules that can be cleaved by them and the myriad of biological processes that they can potentially regulate. The huge complexity of MMP functions within the 'protease web' is crucial for many physiologic and pathologic processes, including immunity, inflammation, bone resorption, and wound healing...
February 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28217934/population-dynamics-of-wild-rodents-induce-stochastic-fadeouts-of-a-zoonotic-pathogen
#3
Giorgio Guzzetta, Valentina Tagliapietra, Sarah E Perkins, Heidi C Hauffe, Piero Poletti, Stefano Merler, Annapaola Rizzoli
Stochastic processes play an important role in the infectious disease dynamics of wildlife, especially in species subject to large population oscillations. Here we study the case of a free ranging population of yellow-necked mice (Apodemus flavicollis) in northern Italy, where circulation of Dobrava-Belgrade hantavirus (DOBV) has been detected intermittently since 2001, until an outbreak emerged in 2010. We analyzed the transmission dynamics of the recent outbreak using a computational model that accounts for seasonal changes of the host population and territorial behavior...
February 19, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28217117/the-promise-of-whole-genome-pathogen-sequencing-for-the-molecular-epidemiology-of-emerging-aquaculture-pathogens
#4
REVIEW
Sion C Bayliss, David W Verner-Jeffreys, Kerry L Bartie, David M Aanensen, Samuel K Sheppard, Alexandra Adams, Edward J Feil
Aquaculture is the fastest growing food-producing sector, and the sustainability of this industry is critical both for global food security and economic welfare. The management of infectious disease represents a key challenge. Here, we discuss the opportunities afforded by whole genome sequencing of bacterial and viral pathogens of aquaculture to mitigate disease emergence and spread. We outline, by way of comparison, how sequencing technology is transforming the molecular epidemiology of pathogens of public health importance, emphasizing the importance of community-oriented databases and analysis tools...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28216184/vaccine-development-for-emerging-virulent-infectious-diseases
#5
Joel N Maslow
The recent outbreak of Zaire Ebola virus in West Africa altered the classical paradigm of vaccine development and that for emerging infectious diseases (EIDs) in general. In this paper, the precepts of vaccine discovery and advancement through pre-clinical and clinical assessment are discussed in the context of the recent Ebola virus, Middle East Respiratory Syndrome coronavirus (MERS-CoV), and Zika virus outbreaks. Clinical trial design for diseases with high mortality rates and/or high morbidity in the face of a global perception of immediate need and the factors that drive design in the face of a changing epidemiology are presented...
February 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28215501/serial-quantiferon-testing-and-tuberculosis-disease-risk-among-young-children-an-observational-cohort-study
#6
Jason R Andrews, Elisa Nemes, Michele Tameris, Bernard S Landry, Hassan Mahomed, J Bruce McClain, Helen A Fletcher, Willem A Hanekom, Robin Wood, Helen McShane, Thomas J Scriba, Mark Hatherill
BACKGROUND: The value of quantitative interferon-γ release assay results for predicting progression from Mycobacterium tuberculosis infection to active disease is unknown. We aimed to investigate the relation between QuantiFERON-TB Gold In-Tube (QFT) conversion interferon-γ values and risk of subsequent active tuberculosis disease and of QFT reversion. METHODS: We analysed data from a reported vaccine efficacy trial of the tuberculosis vaccine MVA85A in South Africa...
February 16, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28215397/clinical-mimics-an-emergency-medicine-focused-review-of%C3%A2-influenza-mimics
#7
Erica Simon, Brit Long, Alex Koyfman
BACKGROUND: Influenza viruses are a significant cause of morbidity and mortality in the United States. Given the wide range of symptoms, emergency physicians must maintain a broad differential diagnosis in the evaluation and treatment of patients presenting with influenza-like illnesses. OBJECTIVE: This review addresses objective and subjective symptoms commonly associated with influenza and discusses important mimics of influenza viruses, while offering a practical approach to their clinical evaluation and treatment...
February 15, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28211758/life-cycle-host-utilization-and-ecological-fitting-for-invasive-lancet-liver-fluke-dicrocoelium-dendriticum-emerging-in-southern-alberta-canada
#8
Bradley van Paridon, John S Gilleard, Douglas D Colwell, Cameron P Goater
The expansion of parasite distributions outside of their native host and geographical ranges has occurred repeatedly over evolutionary time. Contemporary examples include emerging infectious diseases (EID's), many of which pose threats to human, domestic animal, and wildlife populations. Theory predicts that parasites with complex life cycles will be rare as EID's due to constraints imposed by host specialization at each life-cycle stage. In contrast to predictions of this theory, we report 2 new intermediate hosts in the 3-host life cycle of the liver fluke Dicrocoelium dendriticum in Cypress Hills Provincial Park, Alberta, Canada...
February 17, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28211266/-non-febrile-syndromes-in-the-traveler-returning-from-tropical-regions-admitted-in-a-monographic-unit
#9
A Anula-Morales, B Martin-Giner, M Hernández-Cabrera, C Carranza-Rodríguez, E Pisos-Álamo, N Jaén-Sánchez, J L Pérez-Arellano
OBJECTIVE: The aim was to analyse those syndromes without fever in travellers who return from tropical regions evaluated at our Department of Infectology and Tropical Medicine. Clarifying these conditions intends to reach earlier diagnoses and, perhaps, to avoid the emergence and spread of imported diseases, as well as to establish appropriate preventive measures. METHODS: An observational descriptive transversal study was performed, selecting those patients who returned from tropical regions without fever (n = 281), amongst all travellers evaluated in our department between 1998 and 2013...
February 17, 2017: Revista Española de Quimioterapia: Publicación Oficial de la Sociedad Española de Quimioterapia
https://www.readbyqxmd.com/read/28210505/nanotechnology-based-approach-in-tuberculosis-treatment
#10
REVIEW
Mohammad Nasiruddin, Md Kausar Neyaz, Shilpi Das
Tuberculosis, commonly known as TB, is the second most fatal infectious disease after AIDS, caused by bacterium called Mycobacterium tuberculosis. Prolonged treatment, high pill burden, low compliance, and stiff administration schedules are factors that are responsible for emergence of MDR and XDR cases of tuberculosis. Till date, only BCG vaccine is available which is ineffective against adult pulmonary TB, which is the most common form of disease. Various unique antibodies have been developed to overcome drug resistance, reduce the treatment regimen, and elevate the compliance to treatment...
2017: Tuberculosis Research and Treatment
https://www.readbyqxmd.com/read/28210209/lactate-shuttles-in-neuroenergetics-homeostasis-allostasis-and-beyond
#11
REVIEW
Shayne Mason
Understanding brain energy metabolism-neuroenergetics-is becoming increasingly important as it can be identified repeatedly as the source of neurological perturbations. Within the scientific community we are seeing a shift in paradigms from the traditional neurocentric view to that of a more dynamic, integrated one where astrocytes are no longer considered as being just supportive, and activated microglia have a profound influence. Lactate is emerging as the "good guy," contrasting its classical "bad guy" position in the now superseded medical literature...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28207983/a-novel-flow-cytometric-application-discriminates-among-the-effects-of-chemical-inhibitors-on-various-phases-of-babesia-divergens-intraerythrocytic-cycle
#12
Jeny R Cursino-Santos, Manpreet Singh, Petra Pham, Cheryl A Lobo
Human babesiosis is a global emerging infectious disease caused by intraerythrocytic parasites of the genus Babesia. Its biology has remained largely unexplored due to a lack of critical tools and techniques required to define the various stages and phases of the parasite's cycle in its host RBC and the interplay between host and parasite. This article presents a powerful set of tools combining stage synchronization of the parasite with a platform that encompasses both a flow cytometric evaluation of the subpopulation structure of the parasite population together with a morphological assessment of the population parasites using light microscopy of conventional Giemsa stained smears...
February 16, 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
https://www.readbyqxmd.com/read/28207078/emerging-infectious-diseases-animals-and-future-epidemics
#13
Herbert L DuPont
Emerging and reemerging infections have become prevalent in the United States since the 1970s, causing illness, death, and fear among the public. The published literature was reviewed to offer a perspective on risk factors for disease acquisition and to allow a prediction of the next microbial assault after Ebola and Zika. Four well-integrated factors likely will contribute simultaneously: animals colonized or infected by pathogens capable of human transmission, microbes recurrently changing their virulence, a growing number of susceptible people, and climatic and environmental factors encouraging disease transmission...
February 1, 2017: Texas Medicine
https://www.readbyqxmd.com/read/28203189/a-mystery-of-bilateral-annular-choroidal-and-exudative-retinal-detachment-with-no-systemic-involvement-is-it-part-of-vogt-koyanagi-harada-disease-spectrum-or-a-new-entity
#14
Ibrahim Elaraoud, Walter Andreatta, Li Jiang, Kenan Damer, Jalil Al-Ibrahim
A 65-year-old Caucasian male presented to the eye emergency department with bilateral significant visual loss. He was otherwise healthy with no significant past medical history. Ophthalmic history was significant for chronic open-angle glaucoma, for which the patient was using latanoprost once daily to both eyes. There was no preceding history of trauma or ocular surgery and the patient was emmetropic. Two weeks prior to his presentation, he reported a headache, which settled spontaneously. Slit-lamp examination demonstrated bilateral keratic precipitates, bilateral significantly shallow anterior chamber, and bilaterally normal intraocular pressures of 16 mm Hg...
January 2017: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/28202091/isolation-unit-for-multidrug-resistant-tuberculosis-patients-in-a-low-endemic-country-a-step-towards-the-world-health-organization-end-tb-strategy
#15
M C Payen, J P VAN Vooren, O Vandenberg, N Clumeck, S DE Wit
Tuberculosis (TB) remains a threat to public health and is the second cause of death due to a single infectious agent after HIV/AIDS. The worldwide distribution of TB is heterogeneous. The incidence is decreasing in most high-income regions, but the situation remains worrying in many parts of the world. The emergence of Mycobacterium tuberculosis strains resistant to key agents used in treatment (rifampin and isoniazid) contributes to TB transmission around the world. To achieve TB elimination, both high and low endemic countries must upscale their efforts to decrease disease transmission and improve cure rates...
February 16, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28198759/how-specialty-certification-influences-professional-practice
#16
Sharon Vanairsdale
Certified Nurses Day (March 19) honors nurses worldwide who contribute to better patient outcomes through board certification in their specialty. In this month's Magnet® Perspectives column, Sharon Vanairsdale, MS, APRN, ACNS-BC, NP-C, CEN, program director for Emory University Hospital's Serious Communicable Diseases Unit, discusses the value of certification, what it means to her professional practice, and how it helps to champion her work. Ms Vanairsdale is triple certified as a certified emergency nurse, an adult clinical nurse specialist, and an adult nurse practitioner...
March 2017: Journal of Nursing Administration
https://www.readbyqxmd.com/read/28197140/molecular-characteristics-of-carbapenem-resistant-enterobacter-cloacae-in-ningxia-province-china
#17
Zhiyun Shi, Huizheng Zhao, Gang Li, Wei Jia
The emergence of carbapenem-resistant Enterobacteriaceae (CRE) has become a major public health concern worldwide and a new challenge in the treatment of infectious diseases. The molecular characteristics of Enterobacter cloacae in Ningxia China are unknown. In this study, we reported 10 carbapenem-resistant E. cloacae isolates from the General Hospital of Ningxia Medical University, the largest university hospital in Ningxia between January 2012 and December 2013. Bacteria isolates were identified by Vitek2 compact and the identity of non-duplicate E...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28196974/the-efficacy-of-different-anti-microbial-metals-at-preventing-the-formation-of-and-eradicating-bacterial-biofilms-of-pathogenic-indicator-strains
#18
Natalie Gugala, Joe A Lemire, Raymond J Turner
The emergence of multidrug-resistant pathogens and the prevalence of biofilm-related infections have generated a demand for alternative anti-microbial therapies. Metals have not been explored in adequate detail for their capacity to combat infectious disease. Metal compounds can now be found in textiles, medical devices and disinfectants-yet, we know little about their efficacy against specific pathogens. To help fill this knowledge gap, we report on the anti-microbial and antibiofilm activity of seven metals: silver, copper, titanium, gallium, nickel, aluminum and zinc against three bacterial strains, Pseudomonas aeruginosa, Staphylococcus aureus and Escherichia coli...
February 15, 2017: Journal of Antibiotics
https://www.readbyqxmd.com/read/28193763/neurologic-involvement-in-patients-with-atypical-chediak-higashi-disease
#19
Wendy J Introne, Wendy Westbroek, Catherine A Groden, Vikas Bhambhani, Gretchen A Golas, Eva H Baker, Tanya J Lehky, Joseph Snow, Shira G Ziegler, May Christine V Malicdan, David R Adams, Heidi M Dorward, Richard A Hess, Marjan Huizing, William A Gahl, Camilo Toro
OBJECTIVE: To delineate the developmental and progressive neurodegenerative features in 9 young adults with the atypical form of Chediak-Higashi disease (CHD) enrolled in a natural history study. METHODS: Patients with atypical clinical features, but diagnostically confirmed CHD by standard evaluation of blood smears and molecular genotyping, underwent complete neurologic evaluation, MRI of the brain, electrophysiologic examination, and neuropsychological testing...
14, 2017: Neurology
https://www.readbyqxmd.com/read/28192051/strengthening-health-systems-through-international-blood-product-sharing-agreements
#20
Sanjana J Ravi
Blood products are critical to the success of both routine healthcare delivery and emergency response efforts. Ensuring the safety and availability of blood products presents nations with considerable collection, screening, and distribution challenges that are often exacerbated by public health crises, particularly mass-casualty events involving traumatic injuries. However, recent outbreaks of Ebola and Zika virus disease have also illustrated the importance of securing blood product supplies during ongoing infectious disease emergencies...
January 2017: Health Security
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