UV-C for Disinfection

What is UV-C Light

Within the range of Ultraviolet light from 100-280 nano meters exists a range of UV that is medically categorized as germicidal. Meaning any light in this range has the ability to kill or disable bacteria and viruses, including COVID-19.

How does it work?

When Ultraviolet light enters a cell, it disables the cell by adding duplicate bonds to critical nucleic acids and proteins, rendering the organism inactive or unable to reproduce.

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Sources of Information

National Institutes of Health: https://www.nih.gov/coronavirus

Notable Papers

COVID-19 Specific

IUVA Fact Sheet on UV Disinfection for COVID-19: http://iuva.org/COVID-19

UV Air Disinfection

CIE Report: Ultraviolet Air Disinfection: http://files.cie.co.at/cie155-2003%20(free%20copy%20March%202020).pdf
The History of Ultraviolet Germicidal Irradiation for Air Disinfection: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2789813/
UVC LED Irradiation Effectively Inactivates Aerosolized Viruses, Bacteria, and Fungi in a Chamber-Type Air Disinfection System: https://www.ncbi.nlm.nih.gov/pubmed/29959245
Far-UVC light: A new tool to control the spread of airborne-mediated microbial diseases: https://www.nature.com/articles/s41598-018-21058-w

UV Water Sterilization

Moving from the traditional paradigm of pathogen inactivation to controlling antibiotic resistance in water – Role of ultraviolet irradiation: https://www.sciencedirect.com/science/article/pii/S0048969719303328?via%3Dihub
Evaluation survey of microbial disinfection methods in UV-LED water treatment systems: https://www.sciencedirect.com/science/article/pii/S0048969718352379?via%3Dihub

Sub 220nm UV-C

207-nm UV Light—A Promising Tool for Safe Low-Cost Reduction of Surgical Site Infections: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0138418
The efficacy of vacuum-ultraviolet light disinfection of some common environmental pathogens: https://www.ncbi.nlm.nih.gov/pubmed/32046660

Safety of UV Radiation

CIE Report: UV-C Photocarcinogenesis Risks from Germicidal Lamps http://files.cie.co.at/cie187-2010%20(free%20copy%20March%202020).pdf

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