Virus entity

Influenza A virus H1N1

ScopeCurated virus entity IAV H1N1

Recent evidence findings

Evidence-grounded Research Brief · Past 3 months 12

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7 source articles 6 hosts 2 countries
Publication date Category / type Key finding PMID
2026-07-17 Experimental Infection Pathogenicity Experiment In human bronchial epithelial Calu-3 cells, H5N1 clade 2.3.4.4b viruses induced moderate type I interferon and proinflammatory responses, lower than A(H1N1)pdm09 and H5N1 clade 1. 42466872
2026-07-11 Zoonotic Surveillance Virus Isolation Influenza A virus was successfully isolated 42 times from cloacal swabs of wild birds in the Lake Baikal basin, spanning 12 HA/NA subtype combinations. 42515613
2026-07-02 Experimental Infection Host Range Experiment Mammalian-origin H1N1 strains replicated in bovine mammary gland organoids with efficiency comparable to bovine H5N1. 42390302
2026-07 Functional Mechanism Molecular Adaptation NS1-A53D enhances HA stability while maintaining receptor binding specificity, compensating for reduced receptor-binding affinity caused by HA mutations in H1N1 canine influenza virus. 42176433
2026-07 Functional Mechanism Molecular Adaptation Adaptive mutations NS1-A53D and NEP-R42K synergistically enhance replication of H1N1 canine influenza virus by promoting vRNP nuclear export and increasing polymerase activity. 42176433
2026-07 Functional Mechanism Molecular Adaptation Cooperative interactions among HA and NS gene mutations NS1-A53D and NEP-R42K drive mammalian adaptation and pathogenicity of H1N1 canine influenza virus through enhanced HA stability and vRNP export. 42176433
2026-07 Functional Mechanism Molecular Adaptation Synergy between HA mutations N198D and A227E and NS1-A53D enhances early viral entry of H1N1 canine influenza virus through improved attachment and internalization. 42176433
2026-07 Experimental Infection Host Range Experiment Wild bird surveillance isolates H5N3 and H7N1 showed minimal replication in human bronchial tissues compared with pandemic H1N1 and HPAI H5N1 in the ex vivo model. 42397692
2026-06 Zoonotic Surveillance Serological Evidence Influenza A(H1N1)pdm09 antibodies were detected in unvaccinated swine across Norwegian counties during 2009/2010–2022/2023, indicating serological exposure. 41857313
2026-06 Zoonotic Surveillance Serological Evidence Temporal correlation of influenza A(H1N1)pdm09 antibody prevalence between humans and swine in Norway suggests possible bidirectional spillover at the swine–human interface. 41857313
2026-05-25 Genomic Evolution Recombination or Reassortment Introductions of H1N1pdm09 from humans into pigs generated at least five reassortant influenza A virus genotypes in Spain that incorporated pandemic internal cassettes and, in some cases, human seasonal N2 segments. 42244724
2026-05-25 Transmission Evidence Spillover Event Four human H1N1v infections detected in Spain between 2022 and 2026 were genomically linked to influenza A genotypes circulating in white pigs, indicating animal-to-human spillover. 42244724
Evidence-grounded Research Brief · Past month 6

Synthesizing linked evidence and source literature...

Generating an evidence-grounded brief with GPT-5...
3 source articles 1 hosts 0 countries
Publication date Category / type Key finding PMID
2026-07-17 Experimental Infection Pathogenicity Experiment In human bronchial epithelial Calu-3 cells, H5N1 clade 2.3.4.4b viruses induced moderate type I interferon and proinflammatory responses, lower than A(H1N1)pdm09 and H5N1 clade 1. 42466872
2026-07 Functional Mechanism Molecular Adaptation NS1-A53D enhances HA stability while maintaining receptor binding specificity, compensating for reduced receptor-binding affinity caused by HA mutations in H1N1 canine influenza virus. 42176433
2026-07 Functional Mechanism Molecular Adaptation Adaptive mutations NS1-A53D and NEP-R42K synergistically enhance replication of H1N1 canine influenza virus by promoting vRNP nuclear export and increasing polymerase activity. 42176433
2026-07 Functional Mechanism Molecular Adaptation Cooperative interactions among HA and NS gene mutations NS1-A53D and NEP-R42K drive mammalian adaptation and pathogenicity of H1N1 canine influenza virus through enhanced HA stability and vRNP export. 42176433
2026-07 Functional Mechanism Molecular Adaptation Synergy between HA mutations N198D and A227E and NS1-A53D enhances early viral entry of H1N1 canine influenza virus through improved attachment and internalization. 42176433
2026-07 Experimental Infection Host Range Experiment Wild bird surveillance isolates H5N3 and H7N1 showed minimal replication in human bronchial tissues compared with pandemic H1N1 and HPAI H5N1 in the ex vivo model. 42397692
Evidence-grounded Research Brief · Past week 0

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0 source articles 0 hosts 0 countries
Publication date Category / type Key finding PMID
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Evidence-related Animal

Evidence-related animal composition

15 animal taxa

Geographic evidence

Evidence distribution by country

17 countries

Temporal evidence

Evidence dynamics by year

106 year-type groups

Publication output

Source articles by month

320 months