Abstract
During a 7-month period, from December 1986 to June 1987, multiresistant strains of Acinetobacter calcoaceticus subsp. anitratus were isolated from 25 patients in a respiratory intensive care unit. The biochemical characteristics defined two groups of strains, group 1 (14 strains) and group 2 (11 strains). Both groups had the same biochemical characteristics, but group 2 strains could assimilate adipate and phenyl acetate. Moreover, of 16 antibiotics tested only netilmicin and imipenem had some inhibitory activity for group 1 strains; group 2 strains were susceptible to mezlocillin, piperacillin, and ticarcillin. Plasmid profiles of the groups were also different. The results of a laboratory investigation (biochemical characteristics, antibiotic susceptibility, and plasmid isolation) identified two different A. calcoaceticus subsp. anitratus strains as the causes of the outbreak.
MeSH Terms
Acinetobacter/drug effects
Acinetobacter Infections/epidemiology,microbiology
Cross Infection/epidemiology,microbiology
DNA, Bacterial/analysis
Disease Outbreaks
Drug Resistance, Microbial
Humans
Intensive Care Units
Microbial Sensitivity Tests
Plasmids
Respiratory Tract Infections/epidemiology,microbiology
Restriction Mapping
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Vila J
Servei de Microbiologia i Parasitologia, Hospital Clinic i Provincial de Barcelona, Spain.
Almela M
Jimenez de Anta M T
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