Could a specific wavelength of ultraviolet light neutralize the coronavirus?
In short: Standard UV light can kill viruses, but it usually damages human skin and eyes too. However, a specialized version known as Far-UVC light might offer a breakthrough. This specific wavelength could potentially destroy microbes like SARS-CoV-2 in public spaces without posing a significant risk to the people around it.
In the midst of the COVID-19 pandemic, scientists explored unconventional tools to curb the spread of SARS-CoV-2. One promising candidate is Far-UVC light, a specific type of ultraviolet radiation. Unlike traditional UVC light, which is hazardous to human tissue, Far-UVC appears to be safe for use in environments where people are present. This distinction is critical for practical application in high-traffic indoor spaces.
Radiation scientist David Brenner suggests that Far-UVC could become a game-changing tool in public health. Because it can kill microbes and viruses while remaining safe for humans, it could be deployed in hospitals, nursing homes, trains, and other crowded indoor settings. By targeting the virus directly in the air and on surfaces, this technology could provide a continuous layer of defense against infection.
The mechanism relies on the specific wavelength of the light to disrupt the biological structures of viruses. While the potential for large-scale implementation in public transit and healthcare facilities is significant, the deployment of such technology represents a shift in how we manage infectious disease risks in shared spaces. If successfully integrated, Far-UVC could transform how we sanitize the environments we inhabit daily, moving from reactive cleaning to proactive, light-based protection.
The conversation regarding this technology was recorded on July 7, 2020, during a virtual session hosted by TED science curator David Biello. As researchers continue to study the efficacy and safety of different ultraviolet wavelengths, the ability to sanitize indoor environments without human intervention remains a primary goal for pandemic mitigation and long-term public health safety.
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- Summary by Intellect · source: Can light stop the coronavirus? | David Brenner
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