  Special Containment Procedures: All collected documentation and information of the true nature and origin of SCP-0000 is to be restricted to personnel with 0/0000 clearance or above. A description of the syndrome arising from immunity to SCP-0000 is to be edited and disseminated to personnel with insufficient clearance.  Description: All documentation and information regarding SCP-0000 has been pieced together from data fragments received from the Extra-Temporal/Reality Receiver located in Communications Site-00000. These transmissions share a timestamp dated from 0000 AD.  SCP-0000 appears to be an engineered parasite, similar in appearance and function to oligodendrocytes00. SCP-0000 