Topics and Trends in Most Cited Influenza Virus Research Studies Papers

At a glance

Field

Influenza Virus Research Studies

Cohort label

Class of 2026 (2024 publications)

Papers analyzed

4,940

Papers ranked

20

Top topics in ranked papers

HPAI H5N1 virus, spillover, dairy cattle, clade 2.3.4.4b, cross-species transmission

Publication window

Jan 1, 2024 – Dec 31, 2024

Eligibility

Research articles; reviews excluded

Citation window

18 months post-publication

18m citation range

59–398

Data source

OpenAlex · Retrieved July 2026

License

CC BY 4.0

Rankings

20 papers ranked by 18-month citation count

Topic trends

Dominant research themes and year-over-year shifts in Influenza Virus Research Studies

What Topics Define the Class of 2026?

The research landscape for the Class of 2026 is defined by an overwhelming focus on highly pathogenic avian influenza (HPAI) H5N1 virus, which appears in 42% of the highest-impact literature. Investigation into viral spillover dynamics forms a second major pillar (28%), accompanied by continuous molecular tracking of the expanding clade 2.3.4.4b lineage (24%). Cross-species transmission mechanisms (14%) and whole genome sequencing (14%) serve as essential methodological foundations for mapping interspecies jumps and viral adaptation. Concurrently, studies evaluating mammalian adaptation (12%) and phylogenetic analysis (12%) underscore high concern regarding potential host range expansion. A significant cluster of research concentrates on unprecedented agricultural reservoirs, specifically H5N1 in dairy cattle (16%) and bovine infections (10%). Operational tools such as quantitative real-time RT-PCR (8%) and diagnostic hemagglutinin (10%) assays remain critical for rapid outbreak detection. Together, these thematic priorities highlight a fundamental shift in influenza research, moving from localized avian monitoring toward comprehensive One Health surveillance across livestock, wildlife, and potential human interfaces.

How Did Topics Shift from the Class of 2025 to the Class of 2026?

Comparison between the Class of 2025 and Class of 2026 reveals a dramatic pivot toward novel bovine and livestock transmission pathways. The most prominent surge involves H5N1 in dairy cattle, rising from 0% of top literature in 2023 to 16% in 2024 (+16 percentage points). Associated topics including bovine H5N1 infection (+10 percentage points to 10%), occupational exposure (+6 pp to 6%), raw milk contamination (+6 pp to 6%), and dairy farm worker monitoring (+4 pp to 4%) emerged as immediate research priorities. Whole genome sequencing expanded from 8% to 14% (+6 pp), while studies on mammalian adaptation doubled from 6% to 12% (+6 pp), driven by urgent efforts to track interspecies transmission during the United States multispecies outbreak. Conversely, focus on traditional seasonal influenza metrics declined. Studies centered on influenza-associated hospitalization fell from 8% to 4% (-4 pp), PB2 protein molecular studies decreased from 8% to 4% (-4 pp), and seasonal H3N2 research dropped from 10% to 6% (-4 pp). Overall, these shifts mark a decisive transition from standard seasonal disease surveillance to investigating unprecedented panzootic events across agricultural mammalian hosts.

Cite this ranking

Pepkio Research Index (PRI). Topics and Trends in Most Cited Influenza Virus Research Studies Papers, Class of 2026. https://pri.pepkio.com/top-papers/influenza-virus-research-studies/2026. Accessed 2026-07-29.

Methodology
Zheng Su, Tinsley Li, Thematic Shifts in Early-High-Impact Cancer Genomics and Diagnostics Research: A Bibliometric and Semantic Analysis. bioRxiv 2026.07.04.736459; doi: https://doi.org/10.64898/2026.07.04.736459

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