Enact a new rule, “Locations”:-

Each Villager has a Location, tracked in the GNDT and defaulting to Home. (A value of “Home” may be tracked as “-”.) Valid Locations are:-

• Town Square
• The Church
• The Forest
• The Surgery
• Home

A Villager may change their own Location at any time.

Two Villagers are considered to be Near to one another if they share a Location, and if that Location is not “Home”.

To the end of “Symptoms”, add:-

Then, any Villager who is Near to a Villager with a Contagious Disease catches that Disease (if they do not already have it).

Replace “the Doctor may Examine the Villagers” with:-

the Doctor may Examine the Villagers by making a blog post to this effect

Add “This disease is Contagious.” to both Ague and The Black Death.