<prompt> True about GBS is AEDemyelinationPrior viral infectionPrior bacterial infectionPredominant sensory involvement  <response>: Harrisons principles of internal medicine 17th edition. Approximately 70 of the cases of GBS occurs 1-3 weeks after an acute infectious process mostly with campylobacter jejuni CMV or EBV. This infections may result in demyelination.sensory involvement is not at all or rare 