@farmerman,
It said in this article that it was 'undiagnosed'. That means that nobody was aware that that was what she was suffering from. The symptoms of type 1 or juvenile diabetes are increased thirst or dehydration, stomach pain, weakness and listlessness which also mimic flu, or any number of viruses that children are subsceptible too.
Most children who are diagnosed with diabetes are very, very sick, often to the point of hospital admission before they are ever diagnosed because the symptoms can be attributed to many other more commonplace flus and viruses that parents are more likely to attribute these symptoms to unless they have reason to believe their child is diabetic.
I know people will question this - but I do happen to have a nephew- whose uncle and grandmother were both diabetics - so there was a family history and still - my sister-in-law thought he had the flu until he was so sick that he was admitted to the hospital and diagnosed.
Juvenile diabetes is NOT the first thing that most people think of when their child is exhibiting symptoms that can look like the flu.
Maybe more people will be aware now though.