1. Absence of evidence is not evidence of absence.
2. Risk is convex, so every risk increase by measures not taken is multiplicative, not additive.
The real question must be: does the disinfection do more harm than it provides reduction of risk.
2. Risk is convex, so every risk increase by measures not taken is multiplicative, not additive.
The real question must be: does the disinfection do more harm than it provides reduction of risk.
Wait. Is this true? f(x) = x^2 is convex but f(x+d) = f(x) + O(x). Are you saying that human risk assessment is estimated to be exponential?