Infections with branching, acid-fast, mycelial organisms of the streptothrix type are sufficiently rare to justify a detailed account of such cases together with a description of the organism. There is perhaps no field in all bacteriology which is more unsatisfactory, so far as classification is concerned, than the study of these higher fungi. The strains appear to be very plastic and hardly any two of them are identical in all details. For many years reports of these infections have been accumulating and at the present time both clinical and bacteriological data are fairly abundant. Much of this information has not been correlated but more recently some important studies have appeared, notably the work of Wright,1 Musgrave, Clegg and Polk,2 Foulerton,3 and especially of Edith Claypole.4
Wright has studied exhaustively certain members of this group. He contends that the organisms of the
DAVIS DJ. AN ACID-FAST STREPTOTHRIX (NOCARDIA). Arch Intern Med (Chic). 1914;XIV(1):1–7. doi:10.1001/archinte.1914.00070130006001
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