A 30 year old male presents with a 3 day history of weakness and paraesthesia which started in his lower limbs and has since involved his upper limbs. His past medical history is unremarkable, and he rarely attends the GP. He mentions that 3 weeks ago he was feeling unwell but has since recovered from this illness. On examination you observe symmetrical weakness in all 4 limbs and deep tendon reflexes are absent.
Based on the likely diagnosis, which infection is least likely to be associated?