Thank you for your query,
Child seems to have upper respiratory infection
with mostly of a viral in origin with the involvement of trachea.
But the reappearance of fever
after 5 days indicates most probably a secondary bacterial infection. And antibiotic may be required to treat the infection.
Continue the medication for fever and give plenty of oral fluids.
Consult your Pediatrician
for further specific treatment.
Hope I have answered your query.