ETIDIOH - NEW

  Abstract Laridae birds, such as gulls, are known reservoirs of H13 and H16 low pathogenic avian influenza subtypes . However, during the recent outbreaks linked to the reemergence of high pathogenicity avian influenza virus (HPAIV) H5N1 clade 2.3.4.4b of the Goose/Guangdong lineage, European populations of those birds suffered significant losses. HPAI cases were registered not only along the coastlines but also inland areas , particularly in France and Central Europe . During a diagnostic investigation of a group of Laridae birds , part of a HPAIV outbreak registered in the South of France in 2023, larval stages of Ornithodoros maritimus , a nidicolous soft tick parasitizing seabirds, were recovered from a slender-billed gull (Chroicocephalus genei). Affected birds exhibited gross and histopathological lesions consistent with systemic HPAI infection . Immunohistochemistry revealed marked neurotropism , oculotropism and multicentric epitheliotropism . Viral isolation and sequencin...

Abstract Highly pathogenic henipaviruses (Nipah and Hendra viruses) and parahenipaviruses (Langya virus) have demonstrated significant zoonotic potential . We aimed to identify Henipavirus or Parahenipavirus species in rodents and shrews in South Korea to underline the potential zoonotic transmission risk. Kidney and lung tissues from 285 rodents and shrews were screened for Henipavirus and Parahenipavirus using quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR) targeting the Gamak virus and Daeryong virus (DARV) sequences. Based on the qRT-PCR results, 75 out of the 285 individuals tested positive , with the highest viral loads in the kidneys of Apodemus agrarius, Crocidura lasiura , and Crocidura shantungensis . A kidney sample from C. shantungensis that exhibited the lowest Ct value was further analyzed using PCR, Sanger sequencing, and metagenomic analysis, yielding a near-complete genome of a novel Parahenipavirus, designated Parahenipavirus_GH (PHNV-...