AKT-5333

A 27-year-old man comes to his General Practitioner with complaints of lower back pain and pain and weakness in his lower limbs. He reports that his symptoms have been getting worse for the past five days. About three weeks ago, he had Campylobacter gastroenteritis.
During the examination, the doctor observes diminished or absent reflexes in the legs and hypotonia. The patient’s pain and light-touch sensations are also reduced.
What is the most probable diagnosis?