نتایج جستجو برای: h1 : h9n2

تعداد نتایج: 14487  

ژورنال: :مجله علمی - پژوهشی دانشگاه علوم پزشکی سبزوار 1970
منوچهر مکوندی مجتبی فتاحی عبدی زاده علیرضا سمرباف زاده

زمینه و هدف: ویروس آنفلوانزای تیپ a باعث ایجاد بیماری در انسان، طیور و حیوانات پست می شود و اخیرا گزارش هایی مبنی بر انتقال تحت تیپ h9n2 و h5n1 از طیور به انسان به چاپ رسیده است. هدف از این تحقیق، بررسی وجود آنتی بادی h9n2 در افراد مرتبط با صنعت پرورش طیور است که به این وسیله احتمال انتقال و ابتلا به این سویه مورد بررسی قرار می گیرد. مواد و روش ها: در این مطالعه آزمایشات سرولوژی بر روی 100 نمو...

ژورنال: :مجله دانشگاه علوم پزشکی سبزوار 0
منوچهر مکوندی مجتبی فتاحی عبدی زاده درمانگاه تامین اجتماعی، خیابان امیرکبیر، چهارراه هواشناسی، سبزوار علیرضا سمرباف زاده

زمینه و هدف: ویروس آنفلوانزای تیپ a باعث ایجاد بیماری در انسان، طیور و حیوانات پست می شود و اخیرا گزارش هایی مبنی بر انتقال تحت تیپ h9n2 و h5n1 از طیور به انسان به چاپ رسیده است. هدف از این تحقیق، بررسی وجود آنتی بادی h9n2 در افراد مرتبط با صنعت پرورش طیور است که به این وسیله احتمال انتقال و ابتلا به این سویه مورد بررسی قرار می گیرد. مواد و روش ها: در این مطالعه آزمایشات سرولوژی بر روی 100 نمون...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Erin M Sorrell Hongquan Wan Yonas Araya Haichen Song Daniel R Perez

Pandemic influenza requires interspecies transmission of an influenza virus with a novel hemagglutinin (HA) subtytpe that can adapt to its new host through either reassortment or point mutations and transmit by aerosolized respiratory droplets. Two previous pandemics of 1957 and 1968 resulted from the reassortment of low pathogenic avian viruses and human subtypes of that period; however, condi...

2016
Jun Chu Qiang Zhang Tianyuan Zhang Er Han Peng Zhao Ahrar Khan Cheng He Yongzheng Wu

Avian influenza virus subtype H9N2 (H9N2) and Chlamydia psittaci (C. psittaci) are frequently isolated in chickens with respiratory disease. However, their roles in co-infection remain unclear. We tested the hypothesis that C. psittaci enhances H9N2 infection through suppression of host immunity. Thus, 10-day-old SPF chickens were inoculated intra-tracheally with a high or low virulence C. psit...

Journal: :PLoS ONE 2008
Hongquan Wan Erin M. Sorrell Haichen Song Md Jaber Hossain Gloria Ramirez-Nieto Isabella Monne James Stevens Giovanni Cattoli Ilaria Capua Li-Mei Chen Ruben O. Donis Julia Busch James C. Paulson Christy Brockwell Richard Webby Jorge Blanco Mohammad Q. Al-Natour Daniel R. Perez

H9N2 avian influenza A viruses are endemic in poultry of many Eurasian countries and have caused repeated human infections in Asia since 1998. To evaluate the potential threat of H9N2 viruses to humans, we investigated the replication and transmission efficiency of H9N2 viruses in the ferret model. Five wild-type (WT) H9N2 viruses, isolated from different avian species from 1988 through 2003, w...

2010
Jianmin Bi Guangcun Deng Jun Dong Fuli Kong Xuezhu Li Qiang Xu Miaojie Zhang Lihong Zhao Jian Qiao

The repeated transmission to pigs and humans, and the long-term endemicity in terrestrial poultry of H9N2 viruses in China lend urgency to the study of their ecology and pathogenicity. In the present paper, we reported an H9N2 virus sublineage isolated from chickens in northern China from 2007 to 2009 has high lethality for mice. Phylogenetic analysis of the full genome indicated that six repre...

2017
Ye Ge Qiu-Cheng Yao Xian-Fu Wang Zhi-Qiang Fan Guo-Hua Deng Hong-Liang Chai Hua-Lan Chen Yu-Ping Hua

BACKGROUND As the natural hosts of avian influenza viruses (AIVs), aquatic and migratory birds provide a gene pool for genetic transfer among species and across species, forming transient "genome constellations." This work describes the phylogenetic dynamics of H1NX based on the complete molecular characterization of eight genes of viruses that were collected from 2014 to 2015 in Anhui Province...

2013
Karthik Shanmuganatham Mohammed M. Feeroz Lisa Jones-Engel Gavin J.D. Smith Mathieu Fourment David Walker Laura McClenaghan S.M. Rabiul Alam M. Kamrul Hasan Patrick Seiler John Franks Angie Danner Subrata Barman Pamela McKenzie Scott Krauss Richard J. Webby Robert G. Webster

Human infection with avian influenza A(H9N2) virus was identified in Bangladesh in 2011. Surveillance for influenza viruses in apparently healthy poultry in live-bird markets in Bangladesh during 2008-2011 showed that subtype H9N2 viruses are isolated year-round, whereas highly pathogenic subtype H5N1 viruses are co-isolated with subtype H9N2 primarily during the winter months. Phylogenetic ana...

2002
Timothy M. Uyeki Yu-Hoi Chong Jacqueline M. Katz Wilina Lim Yuk-Yin Ho Sophia S. Wang Thomas H.F. Tsang Winnie Wan-Yee Au Shuk-Chi Chan Thomas Rowe Jean Hu-Primmer Jensa C. Bell William W. Thompson Carolyn Buxton Bridges Nancy J. Cox Kwok-Hang Mak Keiji Fukuda

In April 1999, isolation of avian influenza A (H9N2) viruses from humans was confirmed for the first time. H9N2 viruses were isolated from nasopharyngeal aspirate specimens collected from two children who were hospitalized with uncomplicated, febrile, upper respiratory tract illnesses in Hong Kong during March 1999. Novel influenza viruses have the potential to initiate global pandemics if they...

Journal: :PLoS ONE 2009
Munir Iqbal Tahir Yaqub Kolli Reddy John W. McCauley

The impact of avian influenza caused by H9N2 viruses in Pakistan is now significantly more severe than in previous years. Since all gene segments contribute towards the virulence of avian influenza virus, it was imperative to investigate the molecular features and genetic relationships of H9N2 viruses prevalent in this region. Analysis of the gene sequences of all eight RNA segments from 12 vir...

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