Hello and thanks for writing in at HCM
It seems that your son has a flu like symptoms. But as he has high grade fever Bronchitis
and Bronchial Pneumonia
needs to be ruled out. Children below one year are more prone to this. Consult your doctor and get a course of antibiotic as soon as possible.
Give Syp. Paracetamol
in fever, Regular change of wet cloths is mandatory, Protect him from changing climate and keep him covered with clothes.