Impaired host shutoff is a fitness cost associated with baloxavir marboxil resistance mutations in influenza A virus PA/PA-X nuclease domain.
Jack Case, Denys A. Khaperskyy
This paper shows that baloxavir resistance mutations in the PA protein impair host shutoff activity of PA-X, potentially limiting the spread of resistant influenza viruses.
PLoS Pathogens · Feb 9, 2026Peer-reviewedMicrobiology