Scientists Explore Far-Ultraviolet Light as a Shield Against Bird Flu Outbreaks

Researchers are evaluating the use of far‑ultraviolet (far‑UV) light as a non‑chemical barrier to stop highly pathogenic avian influenza from spreading through commercial poultry operations.

The push comes after a severe wave of HPAI that swept across U.S. farms in early 2025, forcing producers to cull tens of millions of chickens and turkeys. The loss of birds triggered a sharp rise in egg prices, underscoring the vulnerability of the food‑supply chain to viral incursions.

Far‑UV light, typically emitted at wavelengths around 222 nanometers, has been shown in laboratory settings to inactivate a broad spectrum of viruses and bacteria without harming mammalian skin or eyes. The technology has already seen limited deployment in hospitals and public transport to reduce airborne transmission of human pathogens.

In the current study, scientists equipped a section of a commercial barn with overhead far‑UV lamps calibrated to deliver a dose sufficient to neutralize influenza viruses in the air and on surfaces. Sensors placed throughout the enclosure recorded viral load before and after activation of the lights, while control areas remained untreated for comparison.

Preliminary data indicate a marked decline in detectable HPAI genetic material in the treated zone, suggesting that continuous far‑UV exposure can suppress viral persistence in a real‑world setting. The researchers caution that field conditions—such as dust, humidity, and bird movement—can affect efficacy, and further trials are planned to refine dosage and lamp placement.

Industry stakeholders have expressed cautious optimism. If far‑UV proves reliable, it could offer a scalable, chemical‑free tool that complements existing biosecurity measures like vaccination, flock management, and sanitation protocols. Regulatory agencies will need to assess safety standards for workers and animals before widespread adoption.

The team intends to expand testing to multiple facilities across different climate zones later this year, aiming to generate the evidence base required for federal approval. Success could reshape how the poultry sector guards against future flu pandemics, reducing the economic shock of mass culling and stabilizing market prices for consumers.