I only had once over the range WBC combined with abdominal pain when i was around 15-16, i got to ER and doctor said it's probably the appendix. After checking me they realised it was just my immune giving a hard fight because i had a sort of poisoning (not salmonella) from raw eggs. We used to eat raw eggs from our chickens in village blended with sugar and cocoa powder but that was the last time obviously. Generally high WBC afaik means your immune is working hard, that you're in a inflammatory state.