Study suggests Ultraviolet light can kill coronavirus in controlled environment

A study led by scientists of Henry Ford Hospital in Detroit has found that ultraviolet light can be used to eliminate SARS-CoV-2 that causes COVID-19. According to study that is available at Medrxiv.org, a certain dos of ultraviolet light can be used to kill coronavirus. study, however, is still in pre-print version and has t been peer-reviewed, meaning it has t been evaluated and should t be used to guide clinical practice. UV region covers wavelength range of 100-400 nm and is divided into three bands: UVA (315-400 nm), UVB (280-315 nm), UVC (100-280 nm).

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Need controlled environment 

As per study, scientists have decontaminated thousands of 3M 1860 respirators with Ultraviolet C (UVC) for frontline workers since March 2020. According to reports, ultraviolet light has been previously used to kill microbes and viruses such as H1N1 influenza at a specific wavelength of 254 nameters. Previous studies have also shown that UVC can inactivate or coronaviruses including Severe Acute Respiratory Syndrome coronavirus (SARS-CoV) and Middle East Respiratory Syndrome coronavirus (MERS-CoV). light will only be effective in a controlled environment which is t possible at home. 

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"Our dos for this study was partially based on previous work with Influenza A (H1N1), Avian influenza A virus (H5N1), Influenza A (H7N9), Influenza A (H7N9). It is me available under a CC-BY-NC-ND 4.0 International license. MERS-CoV, and SARS-CoV,(4, 7-9) where it was determined that all areas of a respirator should receive at least 1 J/cm2. In conclusion, UVC at a dose of 1.5 J/cm2 applied to both sides effective at decontaminating SARS-CoV-2 on some N95 respirators. This dose may only be an appropriate decontamination method to facilitate reuse of PPE for healthcare personnel when applied to certain models/materials," said pre-print version of study.  

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According to experts, virus emerged from a seafood market in China's Wuhan, where exotic animals were reportedly being tred illegally. According to figures by Johns Hopkins University, world has recorded 13 million coronavirus cases and at least 5,72,428 deaths to date. Scientists across world are working on developing a cure for disease with top contender being Oxford and AstraZeneca's ChOx1. 

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