http://www.sciencemag.org/news/2020/03/does-disinfecting-surfaces-really-prevent-spread-coronavirus

In Bozhou, China, in a photo from February, workers spray disinfectant to protect against the novel coronavirus.

Photos from the areas hardest hit by the novel coronavirus SARS-CoV-2 tell a story of disinfection: Trucks spraying streets and a phalanx of sanitation workers wearing backpack tanks fogging sidewalks, parks, and plazas in China, South Korea, Italy, and elsewhere. Countless recommendations admonish us to wash our hands and disinfect often-touched surfaces in our homes. But what is the most effective way to prevent exposure to the virus?