The "Kyonoke infection" is one of the most deadly and mysterious pestilences man has come into contact with.
Effects on hosts
A biological speck resembling a protein causes the plague. It enters the body through the respiration system and then enters the blood stream. From there it moves to the brain, where it germinates. In its advanced state, the protein speck enters the medulla oblongata, where it infects the nerve cells very rapidly. The host quickly loses control over all bodily functions, accompanied by a great amount of pain, finally resulting in heart and lung failure within the space of a few minutes. The specks can survive in an advanced state for a few days; they can leave a dead host and enter another living being close by, in such cases the new host dies within a few hours once the speck has reached the brain.
Dormancy period and slow infection
The speck can also be found in a basic state. As such, it can lie dormant for years and it can survive in extreme environments and conditions. When it enters a living being it usually starts developing to its advanced state, but this is not always the case; it can also lie dormant within a person for a long period of time. It can also enter the brain and start infecting proteins there, slowly but steadily killing the host by eating up its brain over a course of few months. This dual nature of the bio-speck makes it even more of an enigma, not to mention more dangerous.
It can be safely deduced that the biological speck was accidentally uncovered in the bowels of the asteroid Kyonoke Pit is on, but whether it originated there or not is impossible to tell. It is virtually impossible to detect the speck in a person, due to the fact it resembles normal proteins to such a high degree. This has led to speculations that the speck evolved in humans or was even man-made a long time ago, but these speculations have never been substantiated.
In any case, because of the difficulties in detecting and tracing the bio-speck and because it has 100% fatality rate, the bio-speck has fascinated both military researchers and terrorist groups, both of which are eager to get their hands on the speck.