Per 
Item #: SCP-5203
Object Class: Euclid
Special Containment Procedures: SCP-5203 is to always be secured in a modified 5 x 5 metre padded Parasite Containment Unit with a large one-way mirror for research. SCP-5203 is currently being held in the (REDACTED) at (REDACTED) and is never to be relocated. Access inside of SCP-5203’s cell is only authorized with Level-5 up approval. In the event of a breach, all research and security personnel are to be sent to a breach shelter while a mobile task force is sent out wearing space-grade helmets equipped with respirators and hand-held electric net guns with gaps no smaller than 0.1 of a millimetre. SCP-5203 is to be fed one ox per week. In case of major Any changes in SCP-5203’s regular behaviour should immediately be reported to a supervisor.
Description: SCP-5203 is a very contagious 1 x 0.2-millimetre auburn stained parasite. SCP-5203 is capable to jump up to roughly 5 metres. SCP-5203 leaps into affected subject’s ear cavity and travels to the subject’s brain via the auditory pathway. Once inside the subject’s brain SCP-5203 attacks the temporal lobe, causing temporary dementia and if left untreated causes severe permanent memory loss. After SCP-5203 attacks the temporal lobe it moves onto the frontal and occipital lobe. From there on SCP-5203 has complete control of all main body functions and begins to grow 6 centimetres in size. From this point forward it is uncertain what SCP-5203 does to affect the subject’s mind but using brain wave technology we can find a basic idea. It is believed that the subject entirely believes without fault that they are in a fantasy forest with common fictional characters some including fairies, griffins, and wizards. After around five 5 hours with SCP-5203 feasting on the subject’s head the subject will proceed to die. Once the subject is dead the now 10-centimetre SCP-5203 will leave the past subject’s body and look for more food. SCP-5203 will shrink back to regular size after around 1 week. The largest ever recorded size of SCP-5203 has been roughly 1.5 metres.
Discovery: SCP-5203 was first discovered in (REDACTED) by Lee Dagmh, a professor of neuroscience at the University of California. Dr. Dagmh was studying unusual brain wave activity in a dairy cow from Bogota, Columbia. Dr. Dagmh noticed SCP-5203 and called Dr. Dave Garrison, a zoologist to check it out. The foundation was notified when Dr. Garrison noticed irregular and unnatural properties about SCP-5203.
Incident-5203-1-A: On November 27, (REDACTED), the infamous Chaos Insurgency raided (REDACTED). Security personnel at the site were overwhelmed and several SCPs including SCP-5203 were breached from their holding cells. The containment procedures were followed but after 30 minutes of extensive searching turning out no result it was declared that the Chaos Insurgency currently had possession of SCP-5203. The Foundation received a tip of where the Chaos Insurgency shipment might be headed. MTF-Awe (Thrilling Adventure) and MTF-Min (Crouching Dragon) were sent to reclaim SCP-5203 from the Chaos Insurgency. The reclamation operation went without a hitch.
Addendum: On (REDACTED) Dr. B. J. Robin, a renown senior researcher at (DATA EXPUNGED) tested the various healing properties of SCP-500 with the deadly effects from SCP-5203 on 3 D-Class subjects. As Dr. Robin had predicted before the test SCP-500 reversed all negative effects from SCP-5203 prior to the death of the subject. Only 1 pill was issued to Dr. Robin so when the 3 D-Classes were being escorted out of SCP-5203’s Cell at the end of the test D-5671 got infected by SCP-5203 and was left inside SCP-5203’s Cell.
