Pompeii Parasite
rating: 0+x

Item #: SCP-XXXX

Object Class: Euclid

Special Containment Procedures: SCP-XXXX is to be kept in a sealed, pressurized container at a temperature of -196°C. Should containment fail, all personnel are to be given a full examination and sterilized. All clothing that comes into contact with SCP-XXXX is to be fully submerged in potassium hydroxide for 24 hours, then burned.
All personnel infected with SCP-XXXX are to be immediately terminated, and their remains soaked in potassium hydroxide for up to 72 hours, then incinerated.

Description: SCP-XXXX is a parasite that appears to be of the helminth family, though no genus can be determined. Adult instances of SCP-XXXX can reach a length of up to 0.95mm.
SCP-XXXX is capable of becoming dormant when there is no nearby food source, or when reaching temperatures too low to allow free movement. It is theorized that SCP-XXXX can remain dormant for up to 2,000 years before needing to feed again. While dormant, SCP-XXXX is nearly indestructible, able to withstand temperatures above 1500°C, and is nearly impervious to any kind of pressure or vacuum.
The only way to kill a dormant instance of SCP-XXXX is to submerge it in potassium hydroxide for up to 48 hours. This will strip away its protective "shell", allowing it to be killed with extreme temperatures.

When an instance of SCP-XXXX comes in contact with a living human, now designated SCP-XXXX-1, either through the ventral system or via direct exposure to skin, SCP-XXXX will make its way to the victim's intestinal area, where it will lay its eggs and begin feeding off of their blood. In less than 24 hours the eggs will hatch, and the larva will separate into two groups, designated SCP-XXXX-a and SCP-XXXX-b. SCP-XXXX-a will enter SCP-XXXX-1's brain, changing their brain chemistry. This often causes headaches, blurred vision, vertigo, and slurred speech. SCP-XXXX is also capable of influencing XXXX-1, causing them to seek out sources of heat; allowing faster growth and movement within the host; as well as increase their appetite far beyond their normal daily requirements. When questioned about these symptoms, SCP-XXXX-1 will claim they feel "just fine" or "great", despite being in obvious discomfort.

SCP-XXXX-b will move to XXXX-1's sweat glands, where they will start producing a mineral composition similar to that of volcanic ash, forming a mineral shell around SCP-XXXX-1's body, until SCP-XXXX-1 is completely engulfed. This process can take anywhere from forty minutes, to several hours. SCP-XXXX-1 will still claim to be in great condition, despite obvious signs of agony.

Once SCP-XXXX-1 is completely covered in volcanic rock, SCP-XXXX will preserve XXXX-1's body, putting them in a comatose state. SCP-XXXX will then regroup in the victim's intestinal tract and begin to feed and breed. This process can take up to three months before its completion, the victim inside remaining alive despite suffocation and the consumption of vital organs.
Once SCP-XXXX-1 is completely consumed, SCP-XXXX will become dormant until the shell is broken, at which time SCP-XXXX will become airborne, seeking new hosts to repeat the process.

Addendum: SCP-XXXX was first found in 1745, in the ancient city of Pompeii, where archaeologists found perfectly preserved shells of human bodies in the ruins. While uncovering more of the ruins, Dr. ███████ accidentally broke one of the shells, releasing thousands of instances of SCP-XXXX. Dr. ███████ and his team were all infected and converted within 48 hours, prompting foundation personnel to investigate. After destroying or containing all instances of SCP-XXXX, the site was released to archaeologists in the year 1748. Foundation personnel created a cover-story; describing the sudden eruption of a nearby volcano, Mount Vesuvius, as the reason for the bodies being preserved in such a manner; to hide the presence of SCP-XXXX. The preserved bodies were replicated as accurately as possible and returned to the site. The remains of the expedition were disposed of.