نتایج جستجو برای: avian h9n2 influenza virus

تعداد نتایج: 459808  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2004
Mikhail N Matrosovich Tatyana Y Matrosovich Thomas Gray Noel A Roberts Hans-Dieter Klenk

The recent human infections caused by H5N1, H9N2, and H7N7 avian influenza viruses highlighted the continuous threat of new pathogenic influenza viruses emerging from a natural reservoir in birds. It is generally believed that replication of avian influenza viruses in humans is restricted by a poor fit of these viruses to cellular receptors and extracellular inhibitors in the human respiratory ...

2004
K. F. Shortridge

Since the mid-1970s, Hong Kong has functioned as an influenza sentinel post for southern China, a region identified as a hypothetical epicentre for the emergence of pandemic influenza viruses. Nineteen ninety-seven marked the coming-of-age of animal-influenza studies with the recognition in Hong Kong of an incipient pandemic situation brought about by the infection of chicken and humans with an...

Journal: :Journal of clinical microbiology 2013
Shuo Su Jidang Chen Zhenpeng Cao Alexander Lai Honglang Gu Changwen Ke Jie Wu Yugu Li Wenbao Qi Guihong Zhang

Zoonotic transmission of pathogenic avian influenza virus (AIV) is a potential public health threat (1, 2), as the virus may acquire human-to-human transmissibility through mutations or by reassortment with seasonal influenza viruses (e.g., H3N2 and H1N1). The recent outbreak of novel H7N9 virus in China is an enigma (3). In contrast to outbreaks of human infections by other avian influenza vir...

2015
Samuel M.S. Chan Batchuluun Damdinjav Ranawaka A.P.M. Perera Daniel K.W. Chu Bodisaikhan Khishgee Bazarragchaa Enkhbold Leo L.M. Poon Malik Peiris

A(H5N1) virus, for which only 2 of the serum specimens we tested were positive (data not shown), but much lower than the seropositivity level for low pathogenicity avian influenza A(H9N2) virus; 3.4% of the samples tested were positive for A/Chicken/Hong Kong/ G9/1997(H9N2)–like virus (data not shown). A previous US study has reported H6N2-positive antibodies in veterinarians (9). Our results a...

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...

2012
Eleonora Molesti Giovanni Cattoli Francesca Ferrara Eva Böttcher-Friebertshäuser Calogero Terregino Nigel Temperton

In recent years, high pathogenicity avian influenza (HPAI) virus, H5N1, low pathogenicity avian influenza (LPAI) virus, H9N2, and both HPAI and LPAI H7 viruses have proved devastating for the affected economies reliant on poultry industry, and have posed serious public health concerns. These viruses have repeatedly caused zoonotic disease in humans, raising concerns of a potential influenza pan...

2015
Seyedeh Zahra Mosavi Shahla Shahsavandi Mohammad Majid Ebrahimi Ali Reza Hatami Kaveh Sadeghi Hassan Shahivandi

BACKGROUND Limited knowledge about the molecular mechanism of avian influenza H9N2 virus pathogenicity in birds as well as human hosts has limited the development of effective control against the disease. To overcome this issue detailed understanding of the infectious characteristics of the virus in host cells should be obtained. OBJECTIVES In this study we examined the replication kinetics o...

Journal: :Journal of clinical microbiology 2006
Daniel P Fedorko Nancy A Nelson Josephine M McAuliffe Kanta Subbarao

Among the avian influenza A virus subtypes, the H5N1 and H9N2 viruses have the potential to cause an influenza pandemic because they are widely prevalent in avian species in Asia and have demonstrated the ability to infect humans (8). Currently, human infections with wild-type (wt) strains of these viruses could occur in the United States in poultry and turkey farm workers and in travelers retu...

2016
Wen-Tao Yang Shao-Hua Shi Gui-Lian Yang Yan-Long Jiang Liang Zhao Yu Li Chun-Feng Wang

Avian influenza virus (AIV) can infect birds and mammals, including humans, and are thus a serious threat to public health. Vaccination is vital for controlling AIV circulation. In this study, we generated a recombinant lactobacillus expressing the NP-M1-DCpep of H9N2 avian influenza virus and evaluated the activation effect of NC8-pSIP409-NP-M1-DCpep on dendritic cells (DCs) in a mouse model. ...

2017
Xin Li Bai Tian Zhou Jianfang Chen Yongkun Li Xiaodan Zhu Wenfei Li Yan Tang Jing Guo Junfeng Chen Tao Gao Rongbao Wang Dayan Yuelong Shu

The H9N2 avian influenza virus circulates worldwide, predominantly in poultry. Its increasing infectivity and adaptation in poultry and mammals have enhanced the possibility of human infection. However, H9N2 human cases are difficult to detect due to their mild clinical symptoms. Serological study is valuable for risk assessment. A total of 15,700 serum samples were collected from occupationall...

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