#h7n7 — Public Fediverse posts

#Update: First locally acquired #human case of #H7N7 #influenza A was detected in #Taiwan (CDC, May 5 '26), https://etidiohnew.blogspot.com/2026/05/update-first-locally-acquired-human.html

''Further analysis showed that the virus's #PB2 gene carries the E627K mutation (PB2 E627K).'' {indicating mammalian adaptation during human infection}.

Different #genetic #determinants for high #virulence, #transmission and #replication of high pathogenicity #H7N7 avian #influenza virus in #turkeys and #chickens, https://etidiohnew.blogspot.com/2025/03/different-genetic-determinants-for-high.html

#Hemagglutinin and #neuraminidase of a non-pathogenic #H7N7 avian #influenza virus coevolved during acquisition of intranasal #pathogenicity in #chickens, Arch Virol.: https://link.springer.com/article/10.1007/s00705-024-06118-z

This study demonstrates that viruses that are highly pathogenic when administered intranasally require additional adaptations for increased pathogenicity to be highly lethal to intranasally infected chickens.

Large-Scale #Serological #Survey of #Influenza A Virus in South #Korean Wild #Boar (Sus scrofa) https://pubmed.ncbi.nlm.nih.gov/38842623/?utm_source=Feedly&utm_medium=rss&utm_campaign=None&utm_content=1fgJURi2yzLesFml6et0Bb6krzs_FrNIYgPYVFN50JPwVNFg9s&fc=None&ff=20240606155644&v=2.18.0.post9+e462414

Detected subtypes included 23 cases of pandemic 2009 #H1N1, six of human seasonal #H3N2, three of classical swine H1N1, 13 of triple-reassortant swine #H1N2, seven of triple-reassortant swine H3N2, and seven of swine-origin H3N2 variant. Notably, none of the serum samples tested positive for avian IAV subtypes #H3N8, #H5N3, #H7N7, and #H9N2 or canine IAV subtype H3N2.

#H7N6 highly pathogenic avian #influenza in #Mozambique, 2023, https://doi.org/10.1080/22221751.2024.2321993

-- The #zoonotic #potential of this new virus should be considered. #H7N2, #H7N3, #H7N7 viruses have all been previously associated with #conjunctivitis and/or #respiratory symptoms in #humans while in 2003 in the Netherlands a fatal case occurred following an infection with H7N7.