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As the prevalence of disease-causing pathogens continue to negatively impact society, scientists agree that research on UVC disinfection points to the cleansing power of UVC light as a means to safely and efficiently inactivate viruses and kill bacteria.

The Main Point

“Upper-room UVC inhibits the transmission of COVID-19 in buildings, especially in situations where achieving high ventilation rates might otherwise be impractical.”

Upper-room ultraviolet air disinfection might help to reduce COVID-19 transmission in buildings: a feasibility study
PeerJ, October 2020

One major advantage of upper-room UVGI is that it can be retrospectively fitted into buildings provided that the floor to ceiling height is large enough to ensure that the UV field does not impinge on room occupants. By installing such a system it is possible to effectively “turbo-charge” the efficacy of the ventilation system. Indeed, it is possible to achieve >100 equivalent AC/h by installing upper-room UVGI. Read more.

The Main Point

“In summary, results showed that UVGI was an effective method for inactivation of viruses on surfaces.”

Inactivation of Viruses on Surfaces by Ultraviolet Germicidal Irradiation
Graduate Institute of Environmental Health, National Taiwan University, November 2007

In many outbreaks caused by viruses, the transmission of the agents can occur through contaminated environmental surfaces. Because of the increasing incidence of viral infections, there is a need to evaluate novel engineering control methods for inactivation of viruses on surfaces. Ultraviolet germicidal irradiation (UVGI) is considered a promising method to inactivate viruses. Read more.

The Main Point

“Hospitals that use UV-light disinfection after cleaning and disinfection standard protocol have actually significantly mitigated infection risks.”

Evaluation of an Ultraviolet C (UVC) Light-Emitting Device for Disinfection of High Touch Surfaces in Hospital Critical Areas
International Journal of Environmental Research and Public Health, October 2019

There has been a lot of interest in the development of effective and more comprehensive environmental disinfection strategies and, in the last year, attention has been focused on improving “no touch” technologies, including the use of the mobile UV-light disinfection system, which has the advantages of not requiring changes in a room’s ventilation, not leave residue after treatment, and having a broad spectrum of action and rapid exposure times. Read more.

The Main Point

“Comparison of pre- and post-UV decontamination median CFU values revealed a >99% reduction in bacteria.”

Evaluating the effectiveness of ultraviolet-C lamps for reducing keyboard contamination in the intensive care unit: A longitudinal analysis
Science Direct, American Journal of Infection Control, 2016

Ultraviolet (UV) spectrum light for decontamination of patient care areas is an effective way to reduce transmission of infectious pathogens. Our purpose was to investigate the efficacy of an automated UVC device to eliminate bioburden on hospital computer keyboards. Read more.

The Main Point

“Disinfection with UVC light may significantly reduce environmental bacterial contamination and thereby protect the next patient housed in an isolation room.”

Comparison of UVC Light and Chemicals for Disinfection of Surfaces in Hospital Isolation Units
Science.gov, July 2006

To determine the bactericidal effect on surfaces of ceiling- and wall-mounted UVC (UVC) light (wavelength, 254 nm) in isolation units, compared with standard hospital environmental cleaning and chemical disinfection during final disinfection after patients are treated for infections. Read more.