Total Duration of fever is 2 days and cough is also present yes it can be viral fever and it may last for 5 to 7 days in few patients and early also. If persissting beyond workup or investigations has to be done to look for any other cause than viral. Typhoid can be kept in mind as a cause of fever if following symptoms are associated_ slowly rising fever frquency and intensity of fever same and may increase. coated tongue pain abdomen loose stools enlarged liver or spleen which regress after treatment ( can be checked by doctor) In your case fever onset seems sudden and is associated with cough it seems like viral fever to me. just give paracetamol avoid meftal as it can cause gastritis and pain abdomen. use tap water not cold for sponging. keep watch on kids oral intake give fluids as much as he can take. once more viral fever resolves by itself and may take 7 days however if not decreasing by day 5 get kid rechecked.