Thank you for your query.
Viral upper respiratory tract
infection can take some time to get controlled. Fever
may persist. You are giving the right treatment but I would modify the dose of Calpol
to about 7 ml. 4 hourly if the temperature is above 99F by side. You can continue with Ventorlin and observe for another day or two. In case fever does not become normal then investigations may be required and appropriate medication added accordingly.
I hope I have answered your query to your satisfaction.
Wishing your son an early recovery.