Infection Due toActinobacillus actinomycetemcomitansandHaemophilus aphrophilus

Abstract
OVER a period of ten years the laboratory responsible for the identification of miscellaneous types of bacteria at the Communicable Disease Center received 63 strains of Actinobacillus actinomycetemcomitans and 83 strains of Haemophilus aphrophilus. The cultural and serologic studies of 67 of these strains have been the subject of a previous report.1 These organisms are seldom encountered and infrequently identified even when isolated. Although seemingly unrelated by generic designation, they are in fact closely related and frequently confused. It is unlikely that any physician would be able to collect a comparable number of cases of either infection to report. For . . .

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