Avian influenza prevalence and viral shedding routes in Minnesota ring-billed gulls (larus delawarensis)

Todd Froberg, Francesca J Cuthbert, Christopher S. Jennelle, Carol J Cardona, Marie R Culhane

Research output: Contribution to journalArticle

Abstract

Birds within the orders Charadriiformes (shorebirds, gulls) and Anseriformes (waterfowl) are reservoir hosts for avian influenza (AI) viruses, but their role in the transmission dynamics of AI viruses is unclear. To date, waterfowl have been the predominant focal species for most surveillance and epidemiological studies, yet gulls, in particular, have been shown to harbor reassortant AI viruses of both North American and Eurasian lineages and are underrepresented in North American surveillance efforts. To address this gap in surveillance, 1346 ring-billed gulls (Larus delawarensis) were sampled during spring and fall migrations and at three breeding sites in 2017 across Minnesota. Results indicate noticeable age-cohort dynamics in AI virus prevalence within ring-billed gulls in Minnesota. Immunologically naïve juveniles represented the cohort with the highest prevalence rate (57.8%). Regardless of age, more gulls had AI virus detected in oropharyngeal (OP) than in cloacal (CL) swabs. The high AI virus prevalence within ring-billed gulls, particularly in immunologically naïve birds, warrants further targeted surveillance efforts of ring-billed gulls and other closely related species.

Original languageEnglish (US)
Pages (from-to)120-125
Number of pages6
JournalAvian diseases
Volume63
Issue number1
DOIs
StatePublished - Mar 1 2019

Fingerprint

Charadriiformes
Virus Shedding
viral shedding
Influenza in Birds
Larus
avian influenza
Laridae
Influenza A virus
Orthomyxoviridae
monitoring
waterfowl
Birds
Anseriformes
disease reservoirs
birds
breeding sites
epidemiological studies
Breeding
Epidemiologic Studies

Keywords

  • Charadriiformes
  • Larus delawarensis
  • Minnesota
  • avian influenza virus
  • prevalence
  • rRT-PCR
  • ring-billed gull
  • shedding
  • surveillance

Cite this

Avian influenza prevalence and viral shedding routes in Minnesota ring-billed gulls (larus delawarensis). / Froberg, Todd; Cuthbert, Francesca J; Jennelle, Christopher S.; Cardona, Carol J; Culhane, Marie R.

In: Avian diseases, Vol. 63, No. 1, 01.03.2019, p. 120-125.

Research output: Contribution to journalArticle

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