Normally found in soil, these organisms cause occasional sporadic disease in humans and animals throughout the world. Another well publicized find is that of Nocardia as part of the oral microflora. Nocardia spp. have been reported in the normal gingivae and periodontal pockets along with other species such as Actinomyces, Arthromyces and Streptomyces spp. The usual mode of transmission is inhalation of organisms suspended in dust. Another very common method is by traumatic introduction, especially in the jaw. This leads to the entrance of Nocardia into the blood stream and the propagation of its pathogenic effects. Transmission by direct inoculation through puncture wounds or abrasions is less common. Generally, nocardial infection requires some degree of immune suppression. A weakened immune system is a general indicator of a person who is more susceptible to<unk> , such as someone who already has a disease that weakens their immune system. Additionally, those with low T-cell counts or other complications involving T-cells can expect to have a higher chance of becoming infected. Besides those with weak immune systems, a local traumatic inoculation can cause<unk> , specifically the cutaneous, lymphocutaneous, and subcutaneous forms of the disease. There is no racial pattern in the risk of becoming infected with<unk> .
Nocardiosis
Sporotrichosis
Tuberculosis
Infective endocarditis
Sycosis
Kyphosis 
Kyphosis
Loeffler endocarditis