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May 26, 1945


Author Affiliations


Dr. Gaydosh is David Riesman Fellow in Medicine.; From the Committee on Chemotherapy, Philadelphia General Hospital.

JAMA. 1945;128(4):280-281. doi:10.1001/jama.1945.92860210001009

Previous reports have indicated that penicillin may be of value in the treatment of human psittacosis. Heilman and Herrell1 demonstrated the protective effect of penicillin on mice experimentally infected with a strain of psittacosis virus of parakeet origin. According to Parker and Diefendorf2 penicillin has a very definite effect on the course of the disease induced in chick embryos by the virus of psittacosis. Recently penicillin was employed successfully in a human case of ornithosis, which disease is caused by a psittacosis-like virus.3 Our purpose in this communication is to record a case of human psittacosis in which penicillin seemed to be of definite value.


History.  —E. Q., a white woman aged 52, was referred to the Philadelphia General Hospital Jan. 5, 1945 by her family physician, Dr. Philip Yuckman, because of a pneumonia that did not yield to sulfonamide therapy. Nine days before

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