What The Little Madam has sounds like ursinia, but it's not ursinia because accoring to the Internet it's a flower. TLM loves flowers, but they don't make her poo.
Apparently this particular bacterium is a notifiable one. I received a call from the public health people and had to answer lots of questions about whether TLM had been in recent contact with sick kids or sick kids' poo (not if I can help it), that kind of thing.
So on the one hand it's a good thing that it's almost Christmas, because playgroups are finished for the next couple of months and she's not allowed to attend those until she's experienced at least two full days of healthy poo. On the other hand it's bad because now she's on antibiotics so she's not allowed to drink alcohol (just kidding - I'm sure her tolerance is even lower than mine).