Surveillance of Influenza Virus A in Migratory Waterfowl in Northern Europe
Emerging Infectious Diseases·
- DOI
- 10.3201/eid1303.061130
- PMID
- 17552093
- PMCID
- PMC2725893
- OpenAlex
- W2104833394
- Study type
- Journal article
- Publisher
- Centers for Disease Control and Prevention (CDC)
- Article type
- journal-article
- Integrity
- current
Why this research matters now
The common isolation of H5 and H7 subtypes suggests transmission risk to domestic poultry. The authors propose that wild bird screening could serve as a sentinel system to forecast poultry outbreaks.
Structured evidence summary
Research question
The study investigated the prevalence and seasonal patterns of influenza A virus in migratory waterfowl, primarily mallards, at a Swedish bird observatory.
Study design
Large-scale systematic sampling was conducted at Ottenby Bird Observatory in southeast Sweden to detect influenza A virus in migratory waterfowl.
Population and setting
The study sampled migratory waterfowl, predominantly mallards, at Ottenby Bird Observatory in southeast Sweden. Samples were collected in both spring and fall seasons from juvenile and adult birds.
Main findings
Prevalence was higher in fall than spring and among juveniles compared with adults. Spring prevalence was sometimes high, with a mean of 4.0% and peak of 9.5%. H5 and H7 subtypes were commonly isolated.
Public-health relevance
The common isolation of H5 and H7 subtypes suggests transmission risk to domestic poultry. The authors propose that wild bird screening could serve as a sentinel system to forecast poultry outbreaks.
Important limitations
This summary relies on the supplied single-article abstract and metadata. The original paper is required for decision-grade interpretation of study limitations, sampling methods, and virological confirmation protocols.
GIDS interpretation
This peer-reviewed journal article from 2007 describes influenza A surveillance methodology in wild waterfowl and discusses sentinel system concepts. It provides historical context for avian influenza ecology in migratory bird populations in northern Europe.
Related GIDS surveillance
Literature context does not validate, explain, or change a surveillance signal. Exact and contextual relationships are shown separately.
Evidence relationships
This article has 10 auditable classifier relationships to diseases, places, topics, and study design.