Ramphal R, Kluge RM: Acinetobacter calcoaceticus variety anitratus: an increasing nosocomial problem. Am J Med Sci 277: 57–66 (Jan-Feb) 1979

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Acinetobacter calcoaceticus

var anitratus is an increasing nosocomial problem in some institutions. During a recent 16-month period, we observed 15 patients with blood isolates of this organism. Thirteen of these patients acquired the organism from the hospital environment. Eleven of these represented real disease and concurrent growth of the organism from another site was predictive of infection (P < 0.03). A review of laboratory records showed that there was a three-fold increase in nonblood isolates of this organism from hospitalized patients in 1975 and 1976, as compared to 1972 (P < 0.0001), and a marked seasonal effect was noted, with increased isolations during the summer. Aminoglycoside resistance had increased considerably with 25% of nonblood isolates being resistant to gentamicin and 16% resistant to tobramycin despite its restriction; blood isolates were uniformly susceptible to week period, some transient unidentified procoagulant factor associated with hemodialysis could have been present.

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