Thanks for writing to health care magic.
It is not just those two. There could be various causes of fever
your child is having.
Does he have any associated cough
, burning urination or increased frequency of urination.
After a physical examination by your doctor (including a throat examination) investigations like CBC, CRP, Throat swab for culture, urine examination etc are required to arrive at a diagnosis.
Continue to ask further queries.
Hope this helps.