Mycoplasma incognitus is a human invasive Mycoplasma type bacteria, as well as a disease agent that can cause a variety of different diseases. M. incognitus is an immunomodulatory agent, which means that it can weaken the immune response by decreasing the ability of the immune system to produce antibodies. This mycoplasma is highly contagious, and can be passed from person to person via bodily fluids, such as sweat and blood. Since M. incognitus is a mycoplasma, it does not have a cell wall, which means that it is naturally immune to many different antibiotics, such as penicillin or other antibiotics that target the cell wall. This new mycoplasma, however, was later determined to be a close form of mycoplasma fermentans, although it does differ.