UV lights come in a variety of different wavelengths, but not all are equally effective at disinfection. Researchers tested a number of commercially available lights to find the best.
Sewage surveillance is one technique that can alert authorities to the presence of a pathogen in the community. An environmental engineer explains the state of the science when it comes to SARS-CoV-2.
Viruses are small enough to pass through filters, including face masks. Disabling viruses with electrically charged gases could be a better way to curb airborne transmission.