Urinary tract infections are common after delivery, affecting 1-5% of women. Factors that increase the risk include a shorter urethra in women, trauma to muscles and ligaments during labor from excessive wear and tear, and catheterization during delivery. Signs of a urinary tract infection include burning during urination, urgency, and frequency, while a kidney infection may cause fever, chills, and flank pain. Infections are usually treated with antibiotics, though intravenous treatment may be needed in severe cases. Preventive measures include staying hydrated, drinking cranberry juice, and practicing good hygiene.