Manufacturers of products that use ultraviolet (UV) and UVC light to aid indoor air quality are reporting on their progress to support claims that the products are effective against anthrax. While many are assumed to be so, studies are still in progress to determine optimal dosage.
Honeywell Control Products stated that “Bacillus anthracis, the bacteria that causes the disease anthrax, can be as small as 1 to 1.25 microns in size. While there is a lot of speculation, it is not currently known what UV dosage would be required to render Bacillus anthracis harmless.”