# Influenza B virus from respiratory samples of individuals with influenza-like illness in a University Campus in Arizona USA, in February 2025

**Authors:** Angelica U. Negrete, Stacy Nelson, Matthew Scotch, Temitope O. C. Faleye

PMC · DOI: 10.1128/mra.00344-25 · Microbiology Resource Announcements · 2025-07-07

## TL;DR

Three influenza B viruses were identified in a university in Arizona in February 2025, all belonging to a specific genetic group.

## Contribution

The study identifies and classifies a specific clade and subclade of influenza B viruses in a localized outbreak.

## Key findings

- Three influenza B viruses were detected in individuals with flu-like symptoms on a university campus.
- All three viruses belong to the B/Victoria lineage, clade V1A.3a.2, and subclade C.5.1.
- The neuraminidase segments of the viruses belong to clade B.7.

## Abstract

We describe three influenza B viruses detected in respiratory samples from individuals with flu-like symptoms on a university campus in Arizona, USA, in February 2025. Analysis of the hemagglutinin segments shows all three are B/Victoria, clade V1A.3a.2, and subclade C.5.1 with NA segments that belong to clade B.7.

## Linked entities

- **Diseases:** influenza (MONDO:0005812)
- **Species:** Influenza B virus (taxon 11520)

## Full-text entities

- **Diseases:** like illness (MESH:C537675), flu (MESH:D007251)
- **Species:** Influenza B virus (no rank) [taxon 11520]

## Full text

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## Figures

1 figure with captions in the complete paper: https://tomesphere.com/paper/PMC12352029/full.md

## References

11 references — full list in the complete paper: https://tomesphere.com/paper/PMC12352029/full.md

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Source: https://tomesphere.com/paper/PMC12352029