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Influenza infection

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https://www.readbyqxmd.com/read/29778013/using-google-trends-and-ambient-temperature-to-predict-seasonal-influenza-outbreaks
#1
Yuzhou Zhang, Hilary Bambrick, Kerrie Mengersen, Shilu Tong, Wenbiao Hu
BACKGROUND: The discovery of the dynamics of seasonal and non-seasonal influenza outbreaks remains a great challenge. Previous internet-based surveillance studies built purely on internet or climate data do have potential error. METHODS: We collected influenza notifications, temperature and Google Trends (GT) data between January 1st, 2011 and December 31st, 2016. We performed time-series cross correlation analysis and temporal risk analysis to discover the characteristics of influenza epidemics in the period...
May 16, 2018: Environment International
https://www.readbyqxmd.com/read/29777925/epidemiology-of-respiratory-pathogen-carriage-in-the-homeless-population-within-2-shelters-in-marseille-france-2015-2017-cross-sectional-one-day-surveys
#2
Tran Duc Anh Ly, Sophie Edouard, Sekene Badiaga, Herve Tissot-Dupont, Van Thuan Hoang, Vincent Pommier de Santi, Philippe Brouqui, Didier Raoult, Philippe Gautret
OBJECTIVES: To assess risk factors for respiratory tract infection symptoms and signs in sheltered homeless people in Marseille during the winter season, including pathogen carriage. METHODS: Data on 479 male participants within 2 shelters who completed questionnaires and a total of 950 nasal and pharyngeal samples were collected during the winters of 2015-2017. Respiratory pathogen carriage including 7 viruses and 4 bacteria was assessed by quantitative polymerase chain reaction...
May 16, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29777224/progression-of-whole-blood-transcriptional-signatures-from-interferon-induced-to-neutrophil-associated-patterns-in-severe-influenza
#3
Jake Dunning, Simon Blankley, Long T Hoang, Mike Cox, Christine M Graham, Philip L James, Chloe I Bloom, Damien Chaussabel, Jacques Banchereau, Stephen J Brett, Miriam F Moffatt, Anne O'Garra, Peter J M Openshaw
Transcriptional profiles and host-response biomarkers are used increasingly to investigate the severity, subtype and pathogenesis of disease. We now describe whole-blood mRNA signatures and concentrations of local and systemic immunological mediators in 131 adults hospitalized with influenza, from whom extensive clinical and investigational data were obtained by MOSAIC investigators. Signatures reflective of interferon-related antiviral pathways were common up to day 4 of symptoms in patients who did not require mechanical ventilator support; in those who needed mechanical ventilation, an inflammatory, activated-neutrophil and cell-stress or death ('bacterial') pattern was seen, even early in disease...
May 18, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29777028/microrna-302-cluster-downregulates-enterovirus-71-induced-innate-immune-response-by-targeting-kpna2
#4
Nanfang Peng, Xuecheng Yang, Chengliang Zhu, Li Zhou, Haisheng Yu, Mengqi Li, Yong Lin, Xueyu Wang, Qian Li, Yinglong She, Jun Wang, Qian Zhao, Mengji Lu, Ying Zhu, Shi Liu
Enterovirus 71 (EV71) induces significantly elevated levels of cytokines and chemokines, leading to local or systemic inflammation and severe complications. As shown in our previous study, microRNA (miR) 302c regulates influenza A virus-induced IFN expression by targeting NF-κB-inducing kinase. However, little is known about the role of the miR-302 cluster in EV71-mediated proinflammatory responses. In this study, we found that the miR-302 cluster controls EV71-induced cytokine expression. Further studies demonstrated that karyopherin α2 (KPNA2) is a direct target of the miR-302 cluster...
May 18, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29776424/impaired-cd8-t-cell-antiviral-immunity-following-acute-spinal-cord-injury
#5
Diana M Norden, John R Bethea, Jiu Jiang
BACKGROUND: Spinal cord injury (SCI) disrupts essential neuroimmune communication, leading to severe immune depression. Previous studies confirmed immune dysfunction in mice with chronic SCI and following high thoracic level injury where sympathetic innervation of the spleen is disrupted. Here, we induced a mid-thoracic injury where integrity of the sympathetic response is maintained and investigated the antiviral T cell response to influenza virus after acute SCI. METHODS: One week following a contusion SCI at thoracic level T9, mice were infected intranasally with influenza virus...
May 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29775781/phosphorylation-and-dephosphorylation-of-threonine-188-in-nucleoprotein-is-crucial-for-the-replication-of-influenza-a-virus
#6
Yun Li, Lei Sun, Weinan Zheng, Madina Mahesutihan, Jing Li, Yuhai Bi, Heran Wang, Wenjun Liu, Ting Rong Luo
Nucleoprotein (NP) is a major component of the viral ribonucleoprotein (vRNP) complex that is responsible for viral replication, transcription and packaging of influenza A virus. Phosphorylation of NP plays an important role during viral infection. In the present study, we identified threonine 188 (T188) as a novel phosphorylated residue in the NP of influenza A virus by using mass spectrometry. T188 is located within nuclear export signal 2 (NES2) which is chromosome region maintenance 1 (CRM1)-independent...
May 15, 2018: Virology
https://www.readbyqxmd.com/read/29775471/host-directed-combinatorial-rnai-improves-inhibition-of-diverse-strains-of-influenza-a-virus-in-human-respiratory-epithelial-cells
#7
Michael A Estrin, Islam T M Hussein, Wendy B Puryear, Anne C Kuan, Stephen C Artim, Jonathan A Runstadler
Influenza A virus infections are important causes of morbidity and mortality worldwide, and currently available prevention and treatment methods are suboptimal. In recent years, genome-wide investigations have revealed numerous host factors that are required for influenza to successfully complete its life cycle. However, only a select, small number of influenza strains were evaluated using this platform, and there was considerable variation in the genes identified across different investigations. In an effort to develop a universally efficacious therapeutic strategy with limited potential for the emergence of resistance, this study was performed to investigate the effect of combinatorial RNA interference (RNAi) on inhibiting the replication of diverse influenza A virus subtypes and strains...
2018: PloS One
https://www.readbyqxmd.com/read/29774857/influenza-d-virus-infection-in-feral-swine-populations-united-states
#8
Lucas Ferguson, Kaijian Luo, Alicia K Olivier, Fred L Cunningham, Sherry Blackmon, Katie Hanson-Dorr, Hailiang Sun, John Baroch, Mark W Lutman, Bianca Quade, William Epperson, Richard Webby, Thomas J DeLiberto, Xiu-Feng Wan
Influenza D virus (IDV) has been identified in domestic cattle, swine, camelid, and small ruminant populations across North America, Europe, Asia, South America, and Africa. Our study investigated seroprevalence and transmissibility of IDV in feral swine. During 2012-2013, we evaluated feral swine populations in 4 US states; of 256 swine tested, 57 (19.1%) were IDV seropositive. Among 96 archived influenza A virus-seropositive feral swine samples collected from 16 US states during 2010-2013, 41 (42.7%) were IDV seropositive...
June 2018: Emerging Infectious Diseases
https://www.readbyqxmd.com/read/29772263/comparative-analysis-of-microrna-expression-in-dog-lungs-infected-with-the-h3n2-and-h5n1-canine-influenza-viruses
#9
Yun Zheng, Xinliang Fu, Lifang Wang, Wenyan Zhang, Pei Zhou, Xin Zhang, Weijie Zeng, Jidang Chen, Zongxi Cao, Kun Jia, Shoujun Li
MicroRNAs, a class of noncoding RNAs 18 to 23 nucleotides (nt) in length, play critical roles in a wide variety of biological processes. The objective of this study was to examine differences in microRNA expression profiles derived from the lungs of beagle dogs infected with the avian-origin H3N2 canine influenza virus (CIV) or the highly pathogenic avian influenza (HPAI) H5N1 virus (canine-origin isolation strain). After dogs were infected with H3N2 or H5N1, microRNA expression in the lungs was assessed using a deep-sequencing approach...
May 14, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29772011/induction-of-influenza-specific-local-cd8-t-cells-in-the-respiratory-tract-after-aerosol-delivery-of-vaccine-antigen-or-virus-in-the-babraham-inbred-pig
#10
Katie Tungatt, Garry Dolton, Sophie B Morgan, Meriem Attaf, Anna Fuller, Thomas Whalley, Johanneke D Hemmink, Emily Porter, Barbara Szomolay, Maria Montoya, John A Hammond, John J Miles, David K Cole, Alain Townsend, Mick Bailey, Pierre J Rizkallah, Bryan Charleston, Elma Tchilian, Andrew K Sewell
There is increasing evidence that induction of local immune responses is a key component of effective vaccines. For respiratory pathogens, for example tuberculosis and influenza, aerosol delivery is being actively explored as a method to administer vaccine antigens. Current animal models used to study respiratory pathogens suffer from anatomical disparity with humans. The pig is a natural and important host of influenza viruses and is physiologically more comparable to humans than other animal models in terms of size, respiratory tract biology and volume...
May 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29770103/outbreak-of-seoul-virus-among-rats-and-rat-owners-united-states-and-canada-2017
#11
J L Kerins, S E Koske, J Kazmierczak, C Austin, K Gowdy, A Dibernardo
What is already known about this topic?: ​: Seoul virus, a type of hantavirus, is carried by Norway rats. Humans become infected through contact with virus shed in rat urine or droppings, or inhalation of virus particles in dust from contaminated bedding. Infected rats do not develop disease, but humans can experience symptoms ranging from mild influenza-like illness to severe disease with kidney failure and death. Although infections have been previously reported in humans after contact with wild rats, Seoul virus infections had not been reported in pet rats in the United States or Canada...
February 1, 2018: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29770093/canada-s-pandemic-influenza-preparedness-surveillance-strategy
#12
B Henry
The Canadian Pandemic Influenza Preparedness: Planning Guidance for the Health Sector (CPIP) is a guidance document that outlines key health sector preparedness activities designed to ensure Canada is ready to respond to the next influenza pandemic. This article outlines Canada's pandemic influenza surveillance strategy as described in the CPIP Surveillance Annex . The strategy builds on the surveillance activities used for seasonal influenza and incorporates lessons learned from the 2009 H1N1 pandemic, including improved information sharing, improved electronic links among federal, provincial and territorial (FPT) partners and improved surveillance for Indigenous communities...
January 4, 2018: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29770078/evaluating-the-timeliness-of-reporting-in-a-first-nations-communicable-diseases-program
#13
A Lam, S Woods, N Ndubuka
Background: Timely reporting of communicable diseases is necessary to enable a prompt response to mitigate and control outbreaks. This is especially true among First Nations communities due to a number of factors, including unique social determinants of health, which can contribute to rapid disease transmission. Objective: To assess the timeliness of reporting for 12 notifiable communicable diseases in the Northern Inter-Tribal Health Authority, which includes 33 First Nations on-reserve communities in Northern Saskatchewan, Canada, and to assess whether there were differences in reporting times depending on degree of remoteness of community, season or year...
June 1, 2017: Canada Communicable Disease Report, Relevé des Maladies Transmissibles Au Canada
https://www.readbyqxmd.com/read/29769347/avian-influenza-viruses-in-wild-birds-virus-evolution-in-a-multi-host-ecosystem
#14
Divya Venkatesh, Marjolein J Poen, Theo M Bestebroer, Rachel D Scheuer, Oanh Vuong, Mzia Chkhaidze, Anna Machablishvili, Jimsher Mamuchadze, Levan Ninua, Nadia B Fedorova, Rebecca A Halpin, Xudong Lin, Amy Ransier, Timothy B Stockwell, David E Wentworth, Divya Kriti, Jayeeta Dutta, Harm van Bakel, Anita Puranik, Marek J Slomka, Steve Essen, Ian H Brown, Ron A M Fouchier, Nicola S Lewis
Wild ducks and gulls are the major reservoirs for avian influenza A viruses (AIVs). The mechanisms that drive AIV evolution are complex at sites where various duck and gull species from multiple flyways breed, winter or stage. The Republic of Georgia is located at the intersection of three migratory flyways: Central Asian Flyway, East Asian/East African Flyway and Black Sea/Mediterranean Flyway. For six consecutive years (2010-2016), we collected AIV samples from various duck and gull species that breed, migrate and overwinter in Georgia...
May 16, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29769321/lectin-mediated-binding-and-sialoglycans-of-porcine-surfactant-protein-d-synergistically-neutralize-influenza-a-virus
#15
Martin van Eijk, Michael J Rynkiewicz, Kshitij Khatri, Nancy Leymarie, Joseph Zaia, Mitchell R White, Kevan L Hartshorn, Tanya R Cafarella, Irma Van Die, Martin Hessing, Barbara A Seaton, Henk P Haagsman
Innate immunity is critical in the early containment of influenza A virus (IAV) infection, and surfactant protein D (SP-D) plays a crucial role in the pulmonary defense against IAV. In pigs, which are important intermediate hosts during the generation of pandemic IAVs, SP-D uses its unique carbohydrate recognition domain (CRD) to interact with IAV. An N-linked CRD-glycosylation provides interactions with the sialic acid binding site of IAV, and a tripeptide loop at the lectin binding site facilitates enhanced interactions with IAV glycans...
May 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29769256/early-use-of-antibiotics-for-at-risk-children-with-influenza-archie-protocol-for-a-double-blind-randomised-placebo-controlled-trial
#16
Kay Wang, Tricia Carver, Sharon Tonner, Malcolm G Semple, Alastair D Hay, Michael Moore, Paul Little, Christopher Butler, Andrew Farmer, Rafael Perera, Ly-Mee Yu, Susan Mallett, Jane Wolstenholme, Anthony Harnden
INTRODUCTION: Influenza and influenza-like illness (ILI) create considerable burden on healthcare resources each winter. Children with pre-existing conditions such as asthma, diabetes mellitus and cerebral palsy are among those at greatest risk of clinical deterioration from influenza/ILI. The Antibiotics for at Risk CHildren with InfluEnza (ARCHIE) trial aims to determine whether early oral treatment with the antibiotic co-amoxiclav reduces the likelihood of reconsultation due to clinical deterioration in these 'at risk' children...
May 16, 2018: BMJ Open
https://www.readbyqxmd.com/read/29769163/dauricine-combined-with-clindamycin-inhibits-severe-pneumonia-co-infected-by-influenza-virus-h5n1-and-streptococcus-pneumoniae-in-vitro-and-in-vivo-through-nf-%C3%AE%C2%BAb-signaling-pathway
#17
Hui Li, Xin Chen, Shu-Jun Zhou
Dauricine, isolated from Menispermum dauricum, has been widely used for treatment of various diseases, including cardiac ischemia and inflammation-related diseases. However, little is known regarding to the effect of dauricine on severe pneumonia. Therefore, the aim was to investigate the effect of dauricine on severe pneumonia and its mechanism during progress. Herein, H5N1 and Streptococcus pneumoniae (D39) were conducted to induce severe pneumonia in both BEAS-2B cells and mice. In vitro, dauricine reversed the protein and mRNA expressions of TNF-α, IL-6 and IL-1β, examined by ELISA and qRT-PCR assay, respectively...
April 19, 2018: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/29768944/zataria-multiflora-essential-oil-reduces-replication-rate-of-avian-influenza-virus-h9n2-subtype-in-challenged-broiler-chicks
#18
Arzhang Shayeganmehr, Mehdi Vasfi Marandi, Vahid Karimi, Abbas Barin, Arash Ghalyanchi-Langeroudi
The effect of Zataria multiflora essential oil on replication rate of the H9N2 virus in target organs was determined by real-time PCR. One-day-old broiler chicks were randomly divided into six groups and were challenged with H9N2 influenza. Two groups received either 20 or 40 µl/kg body weight/day Zataria multiflora essential oils (ZM) seven days before the challenge while two other groups received the essential oil at the same dosage but after H9N2 challenge. One group received 4 mg/kg body weight/day of the anti-viral compound amantadine after challenge and the last group received no treatment and served as the control...
May 17, 2018: British Poultry Science
https://www.readbyqxmd.com/read/29768714/detection-of-an-avian-lineage-influenza-a-h7n2-virus-in-air-and-surface-samples-at-a-new-york-city-feline-quarantine-facility
#19
Francoise M Blachere, William G Lindsley, Angela M Weber, Donald H Beezhold, Robert E Thewlis, Kenneth R Mead, John D Noti
BACKGROUND: In December 2016, an outbreak of low pathogenicity avian influenza (LPAI) A(H7N2) occurred in cats at a New York City animal shelter and quickly spread to other shelters in New York and Pennsylvania. The A(H7N2) virus also spread to an attending veterinarian. In response, 500 cats were transferred from these shelters to a temporary quarantine facility for continued monitoring and treatment. OBJECTIVES: The objectives of this study was to assess the occupational risk of A(H7N2) exposure among emergency response workers at the feline quarantine facility...
May 16, 2018: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29768209/influenza-virus-mounts-a-two-pronged-attack-on-host-rna-polymerase-ii-transcription
#20
David L V Bauer, Michael Tellier, Mónica Martínez-Alonso, Takayuki Nojima, Nick J Proudfoot, Shona Murphy, Ervin Fodor
Influenza virus intimately associates with host RNA polymerase II (Pol II) and mRNA processing machinery. Here, we use mammalian native elongating transcript sequencing (mNET-seq) to examine Pol II behavior during viral infection. We show that influenza virus executes a two-pronged attack on host transcription. First, viral infection causes decreased Pol II gene occupancy downstream of transcription start sites. Second, virus-induced cellular stress leads to a catastrophic failure of Pol II termination at poly(A) sites, with transcription often continuing for tens of kilobases...
May 15, 2018: Cell Reports
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