Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America

[Giuseppe]

(1.8): Virology. 2008 Jul 14. [Epub ahead of print]

Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America.

Pereda AJ, Uhart M, Perez AA, Zaccagnini ME, La Sala L, Decarre J, Goijman A, Solari L, Suarez R, Craig MI, Vagnozzi A, Rimondi A, K?nig G, Terrera MV, Kaloghlian A, Song H, Sorrell EM, Perez DR. - Instituto de Virolog?a, CICVyA, Instituto Nacional de Tecnolog?a Agropecuaria (INTA), C.C. 25, Castelar (1712), Buenos Aires, Argentina.

Avian influenza (AI) viruses have been sporadically isolated in South America.
The most recent reports are from an outbreak in commercial poultry in Chile in 2002 and its putative ancestor from a wild bird in Bolivia in 2001.
Extensive surveillance in wild birds was carried out in Argentina during 2006-2007.
Using RRT-PCR, 12 AI positive detections were made from cloacal swabs.
One of those positive samples yielded an AI virus isolated from a wild kelp gull (Larus dominicanus) captured in the South Atlantic coastline of Argentina.
Further characterization by nucleotide sequencing reveals that it belongs to the H13N9 subtype.
Phylogenetic analysis of the 8 viral genes suggests that the 6 internal genes are related to the isolates from Chile and Bolivia.
The analysis also indicates that a cluster of phylogenetically related AI viruses from South America may have evolved independently, with minimal gene exchange, from influenza viruses in other latitudes.
The data produced from our investigations are valuable contributions to the study of AI viruses in South America.
PMID: 18632129 [PubMed - as supplied by publisher]
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[AlaskaDenise]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

H13???

I believe it was H13 that was found in the 60s by Robster Webster, et al, in the Antarctica/Great Barrier Reef migration routes.

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[Gert van der Hoek]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Study : JOURNAL OF VIROLOGY, May 1986, p. 655-656

Influenza A viruses of the H13N2 and H13N9 subtypes were isolated from the lung and hilar node of a pilot whale.

Serological, molecular, and biological analyses indicate that the whale isolates are closely related to the H13 influenza viruses from gulls.

http://jvi.asm.org/cgi/reprint/58/2/655.pdf

 

[AlaskaDenise]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

The Great barrier reef trip was H11N9.
see http://www.math.nyu.edu/faculty/greengar/coursepages/tamiflu_laver.pdf

The article notes that on page 7:

healthy wild ducks on lakes in Northern Canada are infected

with every known subtype of influenza type A virus

​

thanks, Dutchy - H13 sounded familiar.

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[AlaskaDenise]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

<H2>Kelp Gull - Larus dominicanus</H2>

Overview

Kelp Gull: Large, stocky gull with white head, underparts, tail. Black back and upperwing with white trailing edge and one distinctive white spot on outer primary tip. Bill is yellow with a red spot near tip; eyes are yellow-gray with red orbital rings; legs and feet are yellow-green.
Range and Habitat

Kelp Gull: Primarily southern hemisphere; has nested off Louisiana coast on the Chandeleur Islands. Accidental in Maryland.
Breeding and Nesting

Kelp Gull: Monogamous; colonial. Sometimes nests and hybridizes with Herring Gulls. Nest built by both sexes, in grassy hollows, in reeds, or on piles of rocks; two to three green blue or buff eggs marked with purple or brown; incubation ranges from 24 to 25 days and is carried out by both sexes. One brood per year.
Foraging and Feeding

Kelp Gull: Feeds in small groups or flocks at sea near coast and along shore; also estuaries, harbors, islands, inland rivers and lakes. Not pelagic. Takes food from water or land. Eats small fish, crustaceans, rodents, insects, and young of other birds. Also eats carrion and offal.

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[AlaskaDenise]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

They might also be the same gulls that go to Antactica - as recorded in this outbreak of Avian Cholera in Antarctica. The Kelp Gulls were implicated as the migratory source of the bacterial outbreak.

http://www.jwildlifedis.org/cgi/content/full/42/2/259

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[mixin]

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

Re: _|Avian influenza virus isolated in wild waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America|_

The waterfowl in Argentina study can be accessed in its entirety at http://www.gains.org/

It's in the 9th quarter report, pages 31-38.

It shows the details of the birds sampled, phylogenetic trees for Ha, NA, M, NS, NP, PA, PB1 and PB2, amino acid sequence pattern and Type A Influenza virus isolates most related to A/KelpGull/Argentina/LDC4/06 by
individual gene segment.