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The Latest Research Proved The Correct Dosage For UV Eradication Of COVID

The Latest Research Proved The Correct Dosage For UV Eradication Of COVID

  • May 20, 2022

Recently, Professor Kaiming Ye from Binghamton University and his team have published a research report titled "Systematic evaluating and modeling of SARS-CoV-2 UVC disinfection" in《Scientific Reports》. This research evaluates and demonstrates the effectof UV dose and wavelength on the efficiency of killing COVID, human health, and the impact of media where the virus is on UV-killing COVID.


From the epidemic outbreak in 2020, UV sterilization as an important virus defense method became a social focus along with facemask, hand sanitizer, and social distancing. Therefore, new products of various types of ultraviolet disinfection equipment on the market have appeared frequently in the past two years, including mask UV sterilizer boxes, high-power UV germicidal lamps, and UVC air sterilizers. All UV equipment manufacturers claim that their products are efficient and completely safe. However, there are still some important problems that we need to figure out. What UV dosage kills the COVID virus? What wavelength? How long does it need? Can UV be used in public without long-term harm to people? There was no targeted research to further demonstrate these. This research by Professor Ye's team fills this gap and provides more detailed data for the more scientific use of ultraviolet light to fight the epidemic.


In 2020, some research showed that 222 nm UV (far UV) can effectively kill COVID without harming human skin and eyes. It is safer than the current commonly used 254 nm UV. Therefore, many high-power 222 nm UVC germicidal lamp products have been pushed on the market in the past two years. As important equipment for environmental disinfection, they are widely used in various public rooms. But the latest research overturns the assertion. New report data shows that the 222 nm UV is not entirely safe. When the 222 nm UV radiation dose reaches 50 j/cm², will make the mechanical integrity of human skin reduced. Skin becomes more prone to cracking. This means bacteria and other microbes are more likely to invade your skin.


This project of Professor Ye's team also researched the effect of different medium environments on the efficiency of UV eradication of COVID and provided more research data on UVC light safety. Their team also developed a safer UVC LED disinfection lamp system based on the research results. They are doing more additional testing before filing for a patent.


Ye believes that this research can offer a scientific basis for standardizing and regulating claims from manufacturers of UV disinfectant devices.

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