OK this is nothing new. Most of these devices have one flaw, they
only kill bacteria & viruses on the place they shine on. After this
treatment the bacteria etc can grow back. A much more desirable
strategy using UVC is to site it in a/c or ventilation systems. There
are two approaches.
1. Passive UVC - this works because to save energy all buildings
re-circulate up to 90% of the air, just like in aircraft cabins. This
means that whatever you sneeze out is distributed on to all of the
other building occupants and they contract infections. The is one
big flaw in this approach because the sneeze has to be carried to
the UVC for the kill to take place. So a better strategy to mitigate
this exposure it to use Active UVC.
2. Active UVC works in a completely different way. Active UV
creates a natural disinfectant (hydro-peroxide) that occurs
naturally outside but not inside. This hydro-peroxide plasma is
blown into the house or building and the disinfectant floats in the
air. If you sneeze it will kill the vast majority of the virus or bacteria
within 3ft. It has been tested against many pathogens, if you are
seriously interested please go to
http://www-e-co.uk.com/uvreme.htm for active UVC and
http://e-co.uk.com/tbs.htm for a video on how passive UVC works.
