Hi
Getting fever, malaise, decrease appetite are common side effects of Vaccine.
Apart from Paracetamol go with tepid water sponging.
If fever still not coming down then I would advise to get a video consultatation.
Next Steps
Video consultation advised
tepid water sponging
Multivitamins and Zinc supplements
Health Tips
plenty of fluids (keep body Hydrated)
tepid water sponging
wishing him quick recovery