SPECIFICITY OF A STREPTOCOCCUS ISOLATED FROM PATIENTS WITH PEMPHIGUS

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Abstract
This report deals with bacteriologic studies of the blood, of material obtained from the nasopharynx and of the fluid from blisters of seven patients who had pemphigus. A streptococcus was isolated from the blood of five of the patients in each of ten trials, whereas cultures from the blood of a sixth patient with pemphigus were sterile on four separate occasions. A characteristic streptococcus was isolated from swabbings of the nasopharynx of these seven patients in each of the twenty-one attempts. A similar streptococcus was obtained from the fluid of blisters only once in thirty-four trials. METHOD OF ISOLATING THE STREPTOCOCCUS FROM THE BLOOD Blood for culture was drawn in amounts of 20 cc. as aseptically as possible and put into sterile tubes containing 5 cc. of a 2 per cent solution of sodium citrate in a physiologic solution of sodium chloride. From 4 to 5 cc. of the mixture

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