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Harrison F. Flippin, M.D.; Michael J. Gaydosh, M.D.; William V. Fittipoldi, M.D.
JAMA. 1945;128(4):280-281. doi:10.1001/jama.1945.92860210001009.
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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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