by Nathan Bartlett, The Conversation In people with Guillain-Barré syndrome, the immune system attacks healthy nerve cells. Credit: Shutterstock The Therapeutic Goods Administration (TGA) yesterday revealed there have been six reports of Guillain-Barré syndrome in Australia following the AstraZeneca COVID vaccine. This is an autoimmune disorder, which causes muscle weakness, numbness and tingling. It can be life threatening if it involves...