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influenza A

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https://www.readbyqxmd.com/read/27905835/hemagglutination-inhibiting-antibody-persistence-1-year-after-of-influenza-vaccination-in-korean-children-and-adolescents
#1
Eun-Kyeong Kang, Byung-Wook Eun, Nam-Hee Kim, Yun-Kyung Kim, Jung-Sub Lim, Dong-Ho Kim
This study aimed to assess the one-year immunogenicity of influenza vaccines and the association between immunogenicity at one month and further influenza infections in children aged 6 months to 18 years. Serum hemagglutination inhibition (HI) antibody titers and GMTs were determined for the recommended influenza strains 0, 1, 6, and 12 months post-vaccination. The serological evidence of influenza infections were defined as the increase of HI titer (HI ≥1:40 and 4-fold rise). The seroprotection rates for strains A(H1N1), A(H3N2), and B were 91...
December 1, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27905101/a-review-on-antiviral-activity-of-the-himalayan-medicinal-plants-traditionally-used-to-treat-bronchitis-and-related-symptoms
#2
REVIEW
Rahila Amber, Muhammad Adnan, Akash Tariq, Sakina Mussarat
OBJECTIVES: Bronchitis is a common respiratory tract infection of humans mainly caused by influenza virus, rhinovirus, adenovirus, coronavirus and respiratory syncytial virus. The aim of this review was to gather fragmented literature on ethnomedicinal plants used against bronchitis in the Himalayan region and their in-vitro validation against bronchitis causing viral pathogens. KEY FINDINGS: Present review contains ethnomedicines of total 55 plants from different countries of the Himalayas...
December 1, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27904748/patterns-of-medication-use-and-factors-associated-with-antibiotic-use-among-adult-fever-patients-at-singapore-primary-care-clinics
#3
Zaw Myo Tun, Mahesh Moorthy, Martin Linster, Yvonne C F Su, Richard James Coker, Eng Eong Ooi, Jenny Guek-Hong Low, Gavin J D Smith, Clarence C Tam
BACKGROUND: Antimicrobial resistance is a public health problem of global importance. In Singapore, much focus has been given to antibiotic usage patterns in hospital settings. Data on antibiotic use in primary care is lacking. We describe antibiotic usage patterns and assess factors contributing to antibiotic usage among adults presenting with acute febrile illness (AFI) in primary care settings in Singapore. METHODS: We analyzed data from the Early Dengue infection and outcome study...
2016: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/27904520/a-diagnostic-one-step-real-time-reverse-transcription-polymerase-chain-reaction-method-for-accurate-detection-of-influenza-virus-type-a
#4
Mohammad Amin Behzadi, Mazyar Ziyaeyan, Abdolvahab Alborzi
INTRODUCTION: Influenza A is known as a public health concern worldwide. In this study, a novel one-step real-time reverse transcription polymerase chain reaction (rtRT-PCR) assay was designed and optimized for the detection of influenza A viruses. MATERIAL AND METHODS: The primers and probe were designed based on the analysis of 90 matrix nucleotide sequence data of influenza type A subtypes from the GenBank database of the National Center for Biotechnology Information (NCBI)...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27904034/regulation-of-matrix-metalloproteinases-2-and-9-gene-expression-in-cultured-human-fetal-membrane-cells-by-influenza-virus-infection
#5
Noboru Uchide, Kyoko Obatake, Rie Yamada, Hidetaka Sadanari, Keiko Matsubara, Tsugiya Murayama, Kunio Ohyama
In order to understand a possible etiology of adverse pregnancy outcomes associated with intrauterine influenza virus infection, we examined the effect of influenza virus infection on gene expression of matrix metalloproteinases (MMPs) in cultured amnion epithelial, amnion mesenchymal and chorion trophoblast cells prepared from human fetal membrane tissues by gelatin zymography, Western blotting and reverse transcriptase-PCR. The cells were infected with influenza A (H1N1) virus. The levels of pro-MMP-9 activity in culture supernatants of three types of cells were increased during the period of 24-48 h after the virus infection as compared to those of mock infection...
2016: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/27903601/performance-evaluation-of-allplex%C3%A2-respiratory-panel-1-2-and-3-for-the-detection-of-respiratory-viruses-and-influenza-a-virus-subtypes
#6
Hee Jae Huh, Ji-Youn Kim, Hyeon Jeong Kwon, Sun Ae Yun, Myoung-Keun Lee, Nam Yong Lee, Jong-Won Kim, Chang-Seok Ki
The Allplex™ Respiratory Panel 1, 2, and 3 (Allplex) is a one-step real-time reverse transcription PCR assay for the detection of respiratory viruses (RVs) and influenza A subtypes based on MuDT™ technology. Performance of the Allplex assay was compared to the AdvanSure™ RV real-time PCR Kit (AdvanSure) and PowerChek™ Pandemic H1N1/H3N2/H5N1 Real-time PCR Kit (PowerChek) using 417 clinical respiratory specimens. Compared to the AdvanSure assay for RV detection by each virus, the ranges of positive percent agreement, negative percent agreement, and kappa value were 82...
November 30, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/27903558/cost-effectiveness-analysis-of-routine-pneumococcal-vaccination-in-the-uk-a-comparison-of-the-phid-cv-vaccine-and-the-pcv-13-vaccine-using-a-markov-model
#7
Emmanuelle Delgleize, Oscar Leeuwenkamp, Eleni Theodorou, Nicolas Van de Velde
OBJECTIVES: In 2010, the 13-valent pneumococcal conjugate vaccine (PCV-13) replaced the 7-valent vaccine (introduced in 2006) for vaccination against invasive pneumococcal diseases (IPDs), pneumonia and acute otitis media (AOM) in the UK. Using recent evidence on the impact of PCVs and epidemiological changes in the UK, we performed a cost-effectiveness analysis (CEA) to compare the pneumococcal non-typeable Haemophilus influenzae protein D conjugate vaccine (PHiD-CV) with PCV-13 in the ongoing national vaccination programme...
November 30, 2016: BMJ Open
https://www.readbyqxmd.com/read/27903461/clinical-characteristics-and-outcome-of-respiratory-syncytial-virus-infection-among-adults-hospitalized-with-influenza-like-illness-in-france
#8
Paul Loubet, Nezha Lenzi, Martine Valette, Vincent Foulongne, Anne Krivine, Nadhira Houhou, Gisele Lagathu, Sylvie Rogez, Sophie Alain, Xavier Duval, Florence Galtier, Deborah Postil, Pierre Tattevin, Philippe Vanhems, Fabrice Carrat, Bruno Lina, Odile Launay
OBJECTIVES: The aim of this study was to analyze characteristics and outcome of RSV infection in adults hospitalized with influenza-like illness (ILI). METHODS: Patients hospitalized with ILI were included in this prospective, multicenter study carried out in six French hospitals during three consecutive influenza seasons (2012-2015). RSV and other respiratory viruses were detected by multiplex PCR in nasopharyngeal swabs. Risk factors for RSV infection were identified by backward stepwise logistic regression analysis...
November 26, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27903065/predominance-and-geo-mapping-of-avian-influenza-h5n1-in-poultry-sectors-in-egypt
#9
Abdelsatar Arafa, Ihab El-Masry, Shereen Khoulosy, Mohammed K Hassan, Moussa Soliman, Olubunmi G Fasanmi, Folorunso O Fasina, Gwenaelle Dauphin, Juan Lubroth, Yilma M Jobre
Highly pathogenic avian influenza (HPAI) virus of the H5N1 subtype has been enzootic in the Egyptian poultry with significant human infections since 2008. This work evaluates the epidemiological and virological information from February 2006 to May 2015 in spatial and temporal terms. Only data with confirmed HPAI H5N1 sub-type were collected, and matched with the epidemiological data from various spatially and temporally-dispersed surveillances implemented between 2006 and 2015. Spatio-temporal analysis was conducted on a total of 3338 confirmed H5N1 HPAI poultry disease outbreaks and outputs described based on transmission patterns, poultry species, production types affected, trade, geographic and temporal distributions in Egypt...
November 28, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27903058/space-time-epidemiology-and-effect-of-meteorological-parameters-on-influenza-like-illness-in-phitsanulok-a-northern-province-in-thailand
#10
Prakash Madhav Nimbalkar, Nitin Kumar Tripathi
Influenza-like illness (ILI) is an acute respiratory disease that remains a public health concern for its ability to circulate globally affecting any age group and gender causing serious illness with mortality risk. Comprehensive assessment of the spatio-temporal dynamics of ILI is a prerequisite for effective risk assessment and application of control measures. Though meteorological parameters, such as rainfall, average relative humidity and temperature, influence ILI and represent crucial information for control of this disease, the relation between the disease and these variables is not clearly understood in tropical climates...
November 21, 2016: Geospatial Health
https://www.readbyqxmd.com/read/27902914/inactivation-of-avian-influenza-virus-in-nonpelleted-chicken-feed
#11
H Toro, V L van Santen, C Breedlove
Corn stored outside could become contaminated with avian influenza virus (AIV) from wild bird droppings. AIV-contaminated ingredients could pass into the poultry flocks in nonpelleted chicken feed. The efficacy of two disinfectants at inactivating AIV in chicken feed was evaluated. Both Termin-8 (a blend of formaldehyde, propionic acid, terpenes, and surfactant) and Finio (a blend of approved phytochemicals and carboxylic acids) effectively inactivated AIV in chicken feed. Because stability of infectious AIV in chicken feed is limited, we evaluated addition of protein (skim milk powder) to the virus suspension...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902910/recombinant-hemagglutinin-of-avian-influenza-virus-h5-expressed-in-the-chloroplast-of-chlamydomonas-reinhardtii-and-evaluation-of-its-immunogenicity-in-chickens
#12
Inkar Castellanos-Huerta, Bernardo Bañuelos-Hernández, Guillermo Téllez, Sergio Rosales-Mendoza, Luis G Brieba, Elizabeth Esquivel-Ramos, Josué I Beltrán-López, Gilberto Velazquez, Isidro Fernandez-Siurob
Globally, avian influenza (AI) is a serious problem in poultry farming. Despite vaccination, the prevalence of AI in México highlights the need for new approaches to control AI and to reduce the economic losses associated with its occurrence in susceptible birds. Recombinant proteins from avian influenza virus (AIV) have been expressed in different organisms, such as plants. The present study investigated the feasibility of designing and expressing the HA protein of AIV in the transplastomic microalga Chlamydomonas reinhardtii as a novel approach for AIV control and taking advantage of culture conditions, its reproductive range, and safe use in consideration of the generally regarded as safe food ingredient regulatory classification...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902900/sensitivity-and-specificity-estimation-for-the-clinical-diagnosis-of-highly-pathogenic-avian-influenza-in-the-egyptian-participatory-disease-surveillance-program
#13
C Verdugo, I El Masry, Y Makonnen, H Hannah, F Unger, M Soliman, S Galal, J Lubroth, D Grace
Many developing countries lack sufficient resources to conduct animal disease surveillance. In recent years, participatory epidemiology has been used to increase the cover and decrease the costs of surveillance. However, few diagnostic performance assessments have been carried out on participatory methods. The objective of the present study was to estimate the diagnostic performance of practitioners working for the Community-Based Animal Health and Outreach (CAHO) program, which is a participatory disease surveillance system for the detection of highly pathogenic avian influenza outbreaks in Egypt...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902899/endemic-variation-of-h9n2-avian-influenza-virus-in-china
#14
Yu-Fu Liu, Han-Zhang Lai, Lin Li, Yu-Peng Liu, Wen-Yan Zhang, Ren Gao, Wen-Ke Huang, Qin-Fang Luo, Yan Gao, Qiong Luo, Xiao-Yu Xie, Jia-Hua Xu, Rui-Ai Chen
Forty-two H9N2 subtype AIV strains were isolated from vaccinated commercial chickens in China from 2012 to 2015. Their HA genes had nucleotide sequence homology from 86.7% to 99.7%, and similarity to the classic vaccine strain was 88.6%-92.6%. A comparison was carried out with published HA genes (410 H9 strains) and whole genomes (306 strains) isolated in China during 2012-2015. Interestingly, 99.1% (448/452) of Chinese H9N2 AIV belonged to lineage h9.4.2, and 98.5% (445/452) of the viruses belonged to h9.4...
December 2016: Avian Diseases
https://www.readbyqxmd.com/read/27902762/presenting-influenza-a-m2e-antigen-on-recombinant-spores-of-bacillus-subtilis
#15
Tomasz Łęga, Paulina Weiher, Michał Obuchowski, Dawid Nidzworski
Effective vaccination against influenza virus infection is a serious problem mainly due to antigenic variability of the virus. Among many of investigated antigens, the extracellular domain of the M2 protein (M2e) features high homology in all strains of influenza A viruses and antibodies against M2e and is protective in animal models; this makes it a potential candidate for generation of a universal influenza vaccine. However, due to the low immunogenicity of the M2e, formulation of a vaccine based on this antigen requires some modification to induce effective immune responses...
2016: PloS One
https://www.readbyqxmd.com/read/27902758/oldenlandia-diffusa-extract-inhibits-biofilm-formation-by-haemophilus-influenzae-clinical-isolates
#16
Takeaki Wajima, Yui Anzai, Tetsuya Yamada, Hideaki Ikoshi, Norihisa Noguchi
Oldenlandia diffusa has been empirically used as a therapeutic adjunct for the treatment of respiratory infections. To establish the basic evidence of its clinical usefulness, antimicrobial and biofilm inhibitory activities of an O. diffusa extract were examined against clinical isolates of Haemophilus influenzae, a major causative pathogen of respiratory and sensory organ infections. No significant growth inhibitory activity was observed during incubation for more than 6 h after the extract addition into a culture of H...
2016: PloS One
https://www.readbyqxmd.com/read/27902651/influenza-vaccine-effectiveness-in-preventing-influenza-illness-among-children-during-school-based-outbreaks-in-the-2014-2015-season-in-beijing-china
#17
Li Zhang, Peng Yang, Mark G Thompson, Yang Pan, Chunna Ma, Shuangsheng Wu, Ying Sun, Man Zhang, Wei Duan, Quanyi Wang
BACKGROUND: Little is known about VE against non-medically attended A(H3N2) influenza illness during 2014-2015 when the vaccine component appeared to be a poor match with circulating strains. METHODS: Forty-three eligible school influenza outbreaks in Beijing, China from November 1 to December 31, 2014 were included in this study. The VE of 2014-2015 trivalent inactivated influenza vaccine (IIV3) was assessed in preventing laboratory-confirmed influenza among school-age children through a case-control design, using asymptomatic controls...
November 28, 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27902411/non-typeable-haemophilus-influenzae-biofilm-production-and-severity-in-lower-respiratory-tract-infections-in-a-tertiary-hospital-in-mexico
#18
Michel Fernando Martínez-Reséndez, Juan Manuel González-Chávez, Elvira Garza-González, Lorena Nefertiti Castro-Fuentes, Jessica Lizzeth Gutiérrez-Ferman, Gabriela Echániz-Aviles, Adrián Camacho-Ortíz, María Noemí Carnalla-Barajas, Araceli Soto-Noguerón, Héctor Jesús Maldonado-Garza, Cristina Liliana Hernández-Balboa, Jorge M Llaca-Díaz, Samantha Flores-Treviño
Non-typeable Haemophilus influenzae (NTHi) is a common opportunistic bacterial pathogen that primarily infects the respiratory mucosa. This study was conducted to assess clinical and microbiological data related to disease severity in patients with lower respiratory tract infections caused by NTHi in a tertiary care hospital in Mexico. NTHi isolates were subjected to serotyping, antimicrobial susceptibility evaluation, and analyses of β-lactamase production, genetic relatedness, and biofilm formation. Clinical and demographic data were retrieved from patients' records...
October 17, 2016: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/27902386/establishment-of-memory-cd8-t-cells-with-live-attenuated-influenza-virus-laiv-across-different-vaccination-doses
#19
Zhongfang Wang, Lukasz Kedzierska, Simone Nuessing, Brendon Chua, Sergio M Quiñones-Parra, Victor C Huber, David Jackson, Paul G Thomas, Katherine Kedzierska
FluMist has been used in children and adults for more than ten years. As pre-existing CD8+ T-cell memory pools can provide heterologous immunity against distinct influenza viruses, it is important to understand influenza-specific CD8+ T-cell responses elicited by different LAIV regimens. In this study, we immunized mice intranasally (i.n.) with two different doses of live-attenuated PR8 virus (PR8 ts, H1N1), low and high, and then assessed protective efficacy by challenging animals with heterosubtypic X31-H3N2 virus at 6 weeks post-vaccination...
November 2, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27902350/novel-reassortant-h9n2-viruses-in-pigeons-and-evidence-for-antigenic-diversity-of-h9n2-viruses-isolated-from-quails-in-egypt
#20
Ahmed Kandeil, Rabeh El-Shesheny, Asmaa Maatouq, Yassmin Moatasim, Zhipeng Cai, Pamela McKenzie, Richard Webby, Ghazi Kayali, Mohamed Ahmed Ali
The endemicity of avian influenza viruses (AIVs) among Egyptian poultry represents a public health risk. Co-circulation of low pathogenic AIV H9N2 subtype with highly pathogenic AIV H5N1 subtype in Egyptian farms potentiates the possibility to generate novel reassortant viruses. Herein, the genetic characteristics of surface glycoproteins of 59 Egyptian H9N2 viruses, isolated between 2013 and 2015, were analyzed. To elucidate the potential of genetic reassortment, 10 H9N2 isolates were selected based on different avian hosts (chickens, ducks, pigeons and quails) and conducted for phylogenetic analyses of full genome sequences...
November 11, 2016: Journal of General Virology
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