Overview

Early stage COVID-19 infection is often both asymptomatic and contagious. By reducing the viral load in airways and hands, we will reduce coronavirus transmission.

Recent studies have shown that far-UVC frequency range of 200-222nm is highly effective against bacteria, but unlike traditional frequencies of 254-279nm, does not pose the same cancer risk.

Modern UVC LED manufacture has also targeted the optimal sterilizing, but dangerous frequency range of 254-279nm, and therefore cannot be safely used on human tissue.

222nm products already exist. We now need to research and develop humanly safe 200-222nm LED emitters to sterilize hands and internal respiratory surfaces. 222nm LED will be a cheap, fast, portable, water and chemical free method of reducing coronavirus transmission.

200-222nm LEDs could also be used to create humanly safe self-sterilizing technology such as fridges, light switches, handles, cars and even deodorants.

Other resources

google '222 nm' as a start, or jump in via these links:

Is 200-222nm UVC Safe and Germicidal?

• Research: Chronic exposure to 222nm safe on skin

• Research: 1.7mJ/cm2 222nm inactivates coronavirus (under review)

• Research: Chronic high dose 222nm does no DNA nor lesion damage

• Research: far-UVC - Effective Germicide, safe on mammalian skin

• Research: UV wavelength-dependent DNA damage

• Research: 222nm Safe on eyes compared to 254nm

• Reseach: 222nm is Germicidal
  

What 200-222nm far-UVC light sources are possible?

• Research: Efficient 219nm semiconductor produced

• Research: Early efforts to produce far-UVC semiconductors

• Product Research: new 222nm excimer from Sterilray

• Product: Care222 by Ushio

• Paper: UVC LED Market information
  

Could this help with Coronavirus?

• Paper: Whilst on airways and hands, no symptoms

• Paper: Transmission from airways

• Paper: COVID-19 and viral load

• Article: reduced viral load could improve coronavirus prognosis

• Article: Low-dose-rate excimer lamps in hospitals, schools, and airports could safely curtail spread of flu

• Product: Right idea, wrong frequency - Aytu healight