All fevers need not be Dengue
First record his temperature. If its more than 100`F its significant.
If less than that and he is active, playful and eating well you need not worry.
in right dosage (15mg/kg/dose) every 6 hrs.
Before giving blood for testing, please see your Pediatrician
. The doctor will tell you if its suggestive of dengue or not.
It might just be a simple viral fever