My niece is one of the children to contract the mysterious severe hepatitis. She had jaundice, white poo, diarrhea, and trouble passing urine. She hasn't been jabbed and as far as we know has never contracted covid (never a positive test but being a kid has had many colds and covid has been in the household) she spent a week in hospital and was treated with fluids and Ursodiol. Shes out now and her symptoms have mostly subsided but shes is still being prescribed the ursodiol and having her blood checked regularly at the hospital as her GGT levels are still high. Shes 4 years old and has two older sisters, one is 13 and the other is 6 and hasn't exhibited symptoms (the 6 year old has tested positive for covid before).