PB1-F2 modulates early host responses but does not affect the pathogenesis of H1N1 seasonal influenza virus.

Abstract excerpt

In the context of infections with highly pathogenic influenza A viruses, the PB1-F2 protein contributes to virulence and enhances lung inflammation. In contrast, its role in the pathogenesis of seasonal influenza viral strains is less clear, especially in the H1N1 subtype, where strains can have a full-length 87- to 90-amino-acid protein, a truncated 57-amino-acid version, or lack the protein altogether. Toward...

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