Evidence map›Paper›PMID 21995264›Full record

ArticleVector borne and zoonotic diseases (Larchmont, N.Y.)2012

Cross-seasonal patterns of avian influenza virus in breeding and wintering migratory birds: a flyway perspective.

Nichola J Hill, John Y Takekawa, Carol J Cardona, Brandt W Meixell, Joshua T Ackerman, Jonathan A Runstadler, Walter M Boyce

Abstract read
In one paragraph

Article in Vector borne and zoonotic diseases (Larchmont, N.Y.), 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  12. Continental-scale dynamics of avian influenza in U.S. waterfowl are driven by demography, migration, and temperature.Ecological applications : a publication of the Ecological Society of America · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Nichola J HillWestern Ecological Research Center, San Francisco Bay Estuary Field Station, U.S. Geological Survey, Vallejo, California, USA.
John Y Takekawa
Carol J Cardona
Brandt W Meixell
Joshua T Ackerman
Jonathan A Runstadler
Walter M Boyce

Funding

PHS HHS HHSN266200700007CPHS HHS HHSN266200700009C
6 · The paper itself

Abstract

The spread of avian influenza viruses (AIV) in nature is intrinsically linked with the movements of wild birds. Wild birds are the reservoirs for the virus and their migration may facilitate the circulation of AIV between breeding and wintering areas. This cycle of dispersal has become widely accepted; however, there are few AIV studies that present cross-seasonal information. A flyway perspective is critical for understanding how wild birds contribute to the persistence of AIV over large spatial and temporal scales, with implications for how to focus surveillance efforts and identify risks to public health. This study characterized spatio-temporal infection patterns in 10,389 waterfowl at two important locations within the Pacific Flyway--breeding sites in Interior Alaska and wintering sites in California's Central Valley during 2007-2009. Among the dabbling ducks sampled, the northern shoveler (Anas clypeata) had the highest prevalence of AIV at both breeding (32.2%) and wintering (5.2%) locations. This is in contrast to surveillance studies conducted in other flyways that have identified the mallard (Anas platyrhynchos) and northern pintail (Anas acuta) as hosts with the highest prevalence. A higher diversity of AIV subtypes was apparent at wintering (n=42) compared with breeding sites (n=17), with evidence of mixed infections at both locations. Our study suggests that wintering sites may act as an important mixing bowl for transmission among waterfowl in a flyway, creating opportunities for the reassortment of the virus. Our findings shed light on how the dynamics of AIV infection of wild bird populations can vary between the two ends of a migratory flyway.

Indexed as

AlaskaAnimal MigrationAnimalsAnimals, WildBird DiseasesBirdsBreedingCaliforniaChick EmbryoCoinfectionDucksFemaleInfluenza A virusInfluenza in BirdsMalePrevalence

Identifiers

PMID21995264
PMCPMC3300065

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.