Publications

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detection of avian pneumovirus in wild canada (branta canadensis) and blue-winged teal (anas discors) geese.choanal cleft swab samples from 770 wild canada geese (branta canadensis) and 358 blue-winged teal (anas discors), captured for relocation or banding, were examined for the presence of avian pneumovirus (apv) rna by reverse transcription (rt)-polymerase chain reaction (pcr) and for virus isolation. the swab samples were pooled into groups of 5 or 10. sixty eight of 102 (66.7%) pooled goose samples were rt-pcr positive for apv rna. thirteen of 52 (25.0%) pooled blue-winged teal samples were rt-pc ...200212495069
characterization of avian metapneumoviruses isolated in the usa.avian pneumovirus (apv; officially known as turkey rhinotracheitis virus) is an emergent pathogen of birds in the usa that results in upper respiratory tract disease in turkeys. six years after the first outbreak in the usa, the disease continues to ravage turkey flocks, primarily in the state of minnesota. from 1997 to 2000, the industry recorded losses estimated at 15 million us dollars per annum. researchers have developed sensitive diagnostic techniques, including the enzyme-linked immunosor ...200212665110
a wild goose metapneumovirus containing a large attachment glycoprotein is avirulent but immunoprotective in domestic turkeys.the genomic structure and composition of an avian metapneumovirus (ampv) recently isolated from wild canada geese (goose 15a/01) in the united states, together with its replication, virulence, and immunogenicity in domestic turkeys, were investigated. the sizes of seven of the eight genes, sequence identity, and genome organization of goose ampv were similar to those of turkey ampv subtype c (ampv/c) strains, indicating that it belonged to the subtype. however, the goose virus contained the larg ...200516282483
evidence of avian metapneumovirus subtype c infection of wild birds in georgia, south carolina, arkansas and ohio, usa.metapneumoviruses (mpvs) were first reported in avian species (ampvs) in the late 1970s and in humans in 2001. although ampvs have been reported in europe and asia for over 20 years, the virus first appeared in the united states in 1996, leaving many to question the origin of the virus and why it proved to be a different subtype from those found elsewhere. to examine the potential role of migratory waterfowl and other wild birds in ampv spread, our study focused on determining whether population ...200818568663
glycoprotein gene truncation in avian metapneumovirus subtype c isolates from the united states.the length of the published glycoprotein (g) gene sequences of avian metapneumovirus subtype-c (ampv-c) isolated from domestic turkeys and wild birds in the united states (1996-2003) remains controversial. to explore the g gene size variation in ampv-c by the year of isolation and cell culture passage levels, we examined 21 turkey isolates of ampv-c at different cell culture passages. the early domestic turkey isolates of ampv-c (ampv/co/1996, ampv/mn/1a-b, and 2a-b/97) had a g gene of 1,798 nuc ...200818663568
stability of the glycoprotein gene of avian metapneumovirus (canada goose isolate 15a/01) after serial passages in cell cultures.the glycoprotein (g) gene sequences of avian metapneumovirus (ampv) subtypes a, b, c, and d are variable in size and number of nucleotides. the g gene of early u.s. turkey isolates of ampv-c have been reported to be 1798 nucleotides (nt) (585 aa) in length, whereas the g genes of more recent turkey isolates have been reported to be 783 nucleotides. in some studies, the g gene of ampv-c turkey isolates was found to be truncated to a smaller g gene of 783 nt (261 aa) upon serial passages in vero c ...201020608539
the pathogenicity of avian metapneumovirus subtype c wild bird isolates in domestic turkeys.avian metapneumovirus subtype c (ampv/c) causes severe upper respiratory disease in turkeys. previous report revealed the presence of ampv/c in wild birds in the southeast regions of the u.s.201323363433
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