نتایج جستجو برای: wnv

تعداد نتایج: 1406  

2013
Brian R. Mann Allison R. McMullen Daniele M. Swetnam Vence Salvato Martin Reyna Hilda Guzman Rudy Bueno James A. Dennett Robert B. Tesh Alan D.T. Barrett

We investigated the genetics and evolution of West Nile virus (WNV) since initial detection in the United States in 1999 on the basis of continual surveillance studies in the Houston, Texas, USA, metropolitan area (Harris County) as a surrogate model for WNV evolution on a national scale. Full-length genomic sequencing of 14 novel 2010-2012 WNV isolates collected from resident birds in Harris C...

Journal: :Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc 2004
Mitchell V Palmer William C Stoffregen Douglas G Rogers Amir N Hamir Juergen A Richt Douglas D Pedersen W Ray Waters

West Nile virus (WNV) infection in 4 reindeer (Rangifer tarandus) resulted in lymphohistiocytic encephalomyelitis within the medulla oblongata and cervical spinal cord. Immunohistochemistry revealed WNV antigen within neurons and among mononuclear cell infiltrates. These represent the first known cases of clinical WNV infection in Cervidae. Clinical signs and lesions were similar to those descr...

2016
C-Yoon Kim Hanseul Oh Juha Song Moonsuk Hur Jae-Hwa Suh Weon-Hwa Jheong Jong-Taek Kim Hong-Shik Oh Jae-Hak Park

West Nile virus (WNV) is a mosquito-borne zoonotic pathogen that has spread throughout Europe and the United States. Recently, WNV spread to East and Southeast Asia, and great efforts have been made in South Korea to prevent the spread of WNV from neighboring countries. In this study, we diagnosed the first case of WNV in pigeons (Columba livia domestica) residing in cities using a competitive ...

2005
Edward B. Hayes James J. Sejvar Sherif R. Zaki Robert S. Lanciotti Amy V. Bode Grant L. Campbell

West Nile virus (WNV) causes epidemics of febrile illness, meningitis, encephalitis, and flaccid paralysis. Since it was first detected in New York City in 1999, and through 2004, >16,000 WNV disease cases have been reported in the United States. Over the past 5 years, research on WNV disease has expanded rapidly. This review highlights new information regarding the virology, clinical manifesta...

2012
Anna Papa Constantina Politis Athina Tsoukala Aikaterini Eglezou Vassiliki Bakaloudi Maria Hatzitaki Katerina Tsergouli

To the Editor: West Nile virus (WNV) is a mosquito-borne fl avivirus that primarily causes an asymptomatic or mild disease in humans; however, in <1% of infected persons, it causes neurologic disease. The virus has received increased attention since 2002 when it was established that WNV is transmissible by blood transfusion and organ transplantation (1). A major WNV outbreak occurred in 2010 in...

2005
Raffaele D'Amelio Alfonso Mele Andrea Mariano Luisa Romanò Roberto Biselli Florigio Lista Alessandro Zanetti Tommaso Stroffolini

approved WNV IgM tests, we were concerned that this phenomenon might also occur with new tests. Thus in 2004, we initiated a follow-up study of patients infected during the inaugural (2003) WNV season in Alberta, Canada. Fifty patients who were WNV IgM positive by 2 commercial IgM kits (West Nile virus capture EIAs, Focus Technologies, Cypress, CA, USA, and Panbio, Windsor, Queensland, Australi...

Journal: :Virus research 2012
Vandana Saxena Thomas Welte Xiaoyong Bao Guorui Xie Jia Wang Stephen Higgs Robert B Tesh Tian Wang

Increasing evidence suggests that West Nile virus (WNV) induces a persistent infection in some humans and animals. Here, we characterized infection of mouse macrophage and kidney epithelial cell lines with a strain of WNV (H8912), cultured from urine of a persistently infected hamster. WNV H8912 had a reduced replication rate, concurrent with a lower interferon (IFN)-β gene expression in both c...

Journal: :The Journal of Experimental Medicine 2006
Erin Mehlhop Michael S. Diamond

West Nile virus (WNV) causes a severe infection of the central nervous system in several vertebrate animals including humans. Prior studies have shown that complement plays a critical role in controlling WNV infection in complement (C) 3(-/-) and complement receptor 1/2(-/-) mice. Here, we dissect the contributions of the individual complement activation pathways to the protection from WNV dise...

Journal: :Vector borne and zoonotic diseases 2010
Paul Oesterle Nicole Nemeth Ginger Young Nicole Mooers Stacey Elmore Richard Bowen Paul Doherty Jeffrey Hall Robert McLean Larry Clark

The cliff swallow (Petrochelidon pyrrhonota) could play an important role in the transmission of West Nile virus (WNV) because of its breeding ecology, reservoir competence status, and potentially high natural exposure rates. Cliff swallows nest within colonies and their nests are occupied year-round by swallow bugs (Oeciacus vicarius), hematophagus ectoparasites that feed primarily on cliff sw...

Journal: :Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians 2008
Javier G Nevarez Mark A Mitchell Timothy Morgan Alma Roy April Johnson

West Nile virus (WNV) is known to affect captive populations of alligators and, in some instances, cause significant mortalities. Alligators have been shown to amplify the virus, serve as a reservoir host, and even represent a source of infection for humans. This study describes a cutaneous manifestation of WNV in captive-reared American alligators (Alligator mississippiensis), previously descr...

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