Anyone can. But they're more likely when you:
Are a woman.
Have had UTIs before.
Have a condition that affects your bladder's nerves (including diabetes, multiple sclerosis, Parkinson's disease, and spinal cord injuries).
Have been through menopause.
Have something that blocks the passage of urine, such as a tumour, kidney stone, or an enlarged prostate.
Use a diaphragm or spermicide for birth control.
Have a catheter, a tube placed into the bladder to drain urine from the bladder into a bag outside the body.
Are a man who has sex with men, has HIV, or hasn’t been circumcised.
Most of these traits also raise the odds that a simple bladder infection may become a more serious kidney infection or turn into sepsis (an infection that has gotten into your bloodstream). For pregnant women, a kidney infection can lead to delivering a baby too early.