PMID: 9542957May 23, 1998Paper

Phylogenetic relationships among highly virulent Newcastle disease virus isolates obtained from exotic birds and poultry from 1989 to 1996

Journal of Clinical Microbiology
Bruce S SealM W Jackwood

Abstract

Newcastle disease virus [NDV (avian paramyxovirus type 1 [APMV1])] isolates were recovered from imported exotic birds confiscated following importation into the United States, from waterbirds in the United States, and from poultry. The exotic birds probably originated from Central and South America, Asia, and Africa. The NDV isolates were initially characterized as highly virulent because of a short mean death time in embryonated chicken eggs. The isolates were typed as neurotropic or viscerotropic velogenic by intracloacal inoculation of adult chickens. Intracerebral pathogenicity index values for the virulent NDV isolates ranged from 1.54 to 1.90, compared to a possible maximum value of 2.0. These isolates had a dibasic amino acid motif in the fusion protein cleavage site sequence required for host systemic replication. Sequence differences were detected surrounding the fusion protein cleavage site and the matrix protein nuclear localization signal, indicating evolution of highly virulent NDV. Phylogenetically, these isolates were categorized with other highly virulent NDV strains that caused outbreaks in southern California poultry during 1972 and in cormorants in the north central United States and southern Canada during 19...Continue Reading

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Citations

Apr 1, 2001·Avian Pathology : Journal of the W.V.P.A·E W Aldous, D J Alexander
Sep 29, 2009·Veterinary Research Communications·Ruben MerinoNorma Calderon
Dec 15, 2010·Avian Pathology : Journal of the W.V.P.A·Fernando Sanchez-VizcainoJose Manuel Sanchez-Vizcaino
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Nov 24, 2006·Journal of Veterinary Diagnostic Investigation : Official Publication of the American Association of Veterinary Laboratory Diagnosticians, Inc·L Mia KimDavid L Suarez
Sep 2, 2009·The Journal of Veterinary Medical Science·Masaji MaseTadao Imada
Jan 1, 2011·The Onderstepoort Journal of Veterinary Research·Mmeta G YongoloJohn E Olsen
Jan 6, 2009·Annals of the New York Academy of Sciences·Andrés Gómez, A Alonso Aguirre
Mar 16, 2000·Developmental and Comparative Immunology·B S SealH S Sellers
Oct 2, 2002·Journal of Clinical Microbiology·Masaji MaseShigeo Yamaguchi
Jul 3, 2021·Animals : an Open Access Journal From MDPI·Elizabeth R RushA Alonso Aguirre
Jan 25, 2006·Virus Research·Jacqueline A KattenbeltAllan R Gould

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