Nonspecific urinary tract infection symptoms in infants <3 months are fever, feeding difficulties, vomiting, lethargy, irritability and failure to thrive.
Toddlers and preschoolers have unusual odor of urine, abdominal or flank pain, frequency, dysuria, and urgency.
School-age children have the classical symptoms of fever, frequency, urgency and dysuria.
Consider UTI in all seriously ill children even when there is evidence of infection outside the urinary tract.
Parenteral antibiotic therapy duration for bacteraemic urinary tract infection (UTI) in young infants may be safely shortened, according to a recent study showing that recurrence and readmission or emergency department revisitation rates are comparable between a ≤7-day and a longer therapy course.