Hi and thanks for the query,
Fever and vomiting in a child could have various causes. This could range from simple viral to bacterial, and at times surgical emergencies. A clinical evaluation usually seeks to exclude an ear, throat, gastrointestinal, lung infections. Blood tests orients on the origin, bacterial with increased leucocytes
, and urine tests might proof a urinary tract infection
I suggest you visit your primary care
physician or pediatrician
for a complete evaluation.
Thanks and best regards,