Thanks for your query.
Urinary tract infection
being a part of it) is a problematic condition. As your child is taking antibiotics, do continue it under the doctor's supervision for as long as it is advised. It is encouraging to learn that the last culture report has been sterile.
Your child needs to be constantly followed up and have a urine routine done frequently and culture as and when required to rule out a recurrence. If the culture shows growth then an antibiotic based on the sensitivity report need to be started. In case of recurrence the doctor will put your child on a small dose of antibiotic for a long period.
It is also pertinent to stress
up the hygiene of the genitalia which should not be overlooked.
Wishing your child a speedy recovery.