This was promptly followed by Amanda showing signs of Fifth disease (aka, Slapped Face disease), Alex spending a day home from school with a fever, then Abigail spending Friday home.
Then the bottom dropped out this morning. It seems someone was kind enough to share the stomach bug du jour with Aidan. And, of course, the way this has gone in most households I'm aware of to date, no one is immune: Before going to bed, both Abigail and Amanda mentioned that their stomachs were bothering them.
My advice: Wash your hands often, drink a few gallons of orange juice, and steer clear of the Tokarski house for the rest of the week.