Category: COVID-19

Covid and Indoor Air:  What We Know Now and the Aftermath Caused by the Overuse of Chemical Disinfectants

At the beginning of the COVID-19 pandemic, I wrote a blog about the importance of being outdoors and how easily the virus spreads indoors, despite mask wearing. I emphasized the best ways to reduce the spread of the virus, in order of effectiveness: 1) ventilation, 2) filtration, and 3) mask wearing.

A significant amount of data now indicates that indoor transmission of the virus far outstrips outdoor transmission. This is likely the result of longer exposure times and decreased turbulence levels (and therefore dispersion) found indoors.[i] A recently published paper in JAMA[ii] has confirmed exactly that. 

Read More »