Seven cases of human nocardiosis caused by Nocardia farcinica.

Twelve nocardia strains isolated from Danish human patients have been examined and compared with reference strains of Nocardia asteroides and N. farcinica using Tsukamura's (1969) simple method of identification. Seven of these strains, recovered from human lesions compatible with nocardioisis, were identified as N. farcinica. These investigations suggest that N. farcinica could be a more common cause of human nocardiosis in Denmark than N. asteroides and other nocardias. N. farcinica might also be the cause of human nocardiosis in other countries.