Hi...Thank you for consulting in Health Care magic.
Fever of three days without any localizing signs or danger signs could as well a viral illness. Usually rather than fever, what is more important is the activity of the child, in between 2 fever episodes on the same day. If he is active and playing around when there is no fever, it is probably and it doesn't require antibiotics at all. Day 1 of fever doing blood tests is also not advisable and that too for a 6 year old, it will not guide you anywhere. Without doing a
blood culture who's results will be available only after 5 days, no body can it si bacterial.
Once
viral fever comes it will there for 4-7 days. So do not worry about duration if the kid is active. You can treat fever with
Paracetamol at 15mg/kg/dose every 4-6th hourly, that too if fever is > 100F.
Hope my answer was helpful for you. I am happy to help any time. Further clarifications and consultations on Health care magic are welcome. If you do not have any clarifications, you can close the discussion and rate the answer. Wish your kid good health.
Dr. Sumanth MBBS., DCH., DNB (Paed).,