Early antiviral treatment cuts flu hospitalisations in nursing homes by 21%
A new study has examined how early and widespread antiviral treatment affects influenza outbreaks in nursing homes. Researchers at Brown University analysed data from 404 outbreaks across 318 facilities, involving nearly 30,000 residents. The findings suggest that quick action can cut hospitalisation rates but may not reduce deaths. The study, led by Andrew Zullo at Brown University's School of Public Health, focused on oseltamivir (Tamiflu) as a preventative measure. National guidelines already recommend giving antivirals to all eligible residents once an outbreak is detected. However, the research tested whether a 70% coverage rate—a more achievable target—could still make a difference.
Results showed that starting treatment within two days of detecting an outbreak, with at least 70% of residents covered, lowered hospitalisation risk by 21%. Despite this improvement, mortality rates remained unchanged, indicating that early intervention helps prevent severe illness but does not guarantee survival. The study also compared antiviral use to vaccination strategies, highlighting the 'herd effect'—where protecting a large portion of the population indirectly shields others. Nursing homes face unique challenges, such as shared living spaces and high-risk residents, making rapid response critical. The large, diverse sample strengthens the reliability of these findings for shaping future guidelines.
The research confirms that early, widespread antiviral use in nursing homes reduces hospitalisations during influenza outbreaks. A 70% coverage threshold was identified as both practical and effective. These insights aim to guide clinical policies and improve outbreak management in long-term care settings.
