✔ 最佳答案
Generally a white blood cells (WBC) count of 11 is not too high. The normal is 4.3-10.8. If the WBC is above 50, than you need to start worrying.
A high WBC count is not a specific disease, it more of a signs of other underlying problems in the body (that may require attention).
Generally WBC helps to fight infection in your body. If your body infected or stressed-out, your WBC count will increase. Some types of medication, like antibiotics, will also increases the WBC count.
If the reported stated may be due to viral infection, then it may be a caused by a viral infection. It is almost impossible to say what type of virus has invaded to your friend’s body as there are so many types of them out there.
Wish all the best to your friend.