It's definitely relevant in family homes where parents/siblings/guests share bathroom use.

When one child gets sick in our house, we take some efforts to keep them somewhat isolated, and these measures have been usually successful.

The bathroom is the weak link in their routine as they continue to share it with siblings. This report reinforces us asking them to spray disinfectant.

Before we enacted some of these policies in our home, one kid getting a bug from school meant the entire family would get it. Now that's much less common.