ETIDIOH - NEW

  Abstract Greece is one of the countries in Europe most affected by West Nile virus (WNV), and since 2010, when the virus caused a large outbreak with 197 human neuroinvasive cases , outbreaks occur almost every year. Mosquito surveillance is an indirect sign of virus circulation; therefore, the purpose of the study was the molecular detection of WNV in 45,988 C. pipiens s.l. mosquitoes collected during 2024 in four Regions of Greece and the genetic characterization of the virus strains. WNV was detected in 41 of 1316 ( 3.12% ) Culex spp. mosquito pools . Next-generation sequencing was applied to the WNV-positive samples that had a high viral load . All WNV sequences belong to Cluster B of the sub-lineage Europe WNV-2A presenting a temporal clustering. The WNV infection rates varied highly across the Regions, regional units and months, being higher in Thessaly and Central Macedonia Regions , especially in July and September. All mosquito pools were also tested for Usutu virus (USU...

  {England} Premises of 32,000 free range laying hens. Samples taken were positive for HPAI H5N1. Birds presented clinical signs prior to testing. Source: WOAH,  https://wahis.woah.org/#/in-review/6914 ____

  {Excerpts} To the Editor : After a decade of no reported human cases, Cambodia faces a resurgence of highly pathogenic avian influenza (HPAI) A(H5N1) virus infections , with an overall mortality of 38%. Cases have occurred primarily in children and adolescents who were exposed to infected poultry (...). From February 2023 through August 2024, a total of 16 infections were detected through the long-standing national influenza-like illness and severe acute respiratory infection surveillance systems, both of which were strengthened by expanded laboratory-testing capacity that was developed during the coronavirus disease 2019 pandemic. All 16 patients reported exposure to sick or dead poultry , and outbreak investigations identified contemporary, genetically similar viruses in poultry collected in or around case households or from active, longitudinal surveillance of live-bird markets . Genomic sequencing revealed an avian origin for all the human infections , and sequences have been...