 [ Symptoms ] should someone who previously suffered from gbs get a flu vaccine  i was given information related to a parent that had once had gbs as a child that she should not receive flu vaccines is this an accurate order  is the risk of  areaction too great to even consider this [ Disease ] you would need to be blood typed by a laboratory test you can not rely on genetics when it comes to blood type i do not know your age but if you are old enough to donate blood you will find out your blood type for free