Affiliation:
1. Associate Professor of Microbiology, Fac. Farm., Universidade de Lisboa, Portugal
2. Laboratory Director, Serv. des Enterobacteries, Pasteur Institute, Paris, France
3. Pasteur Institute, Paris, France
Abstract
Sixty-two strains of Acinetobacter calcoaceticus isolated from pathological samples or from the environment in several hospitals in Lisbon, were studied by means of two complementary phage-typing systems. Eighteen phage-types or sub-types, one group of uncommon types (9·6%) and one group of untypable strains (20·9%) were found. A new phage-type (No. 104) and a new sub-type (No. 18) were defined among the Portuguese strains. The in vitro activity of 26 antibiotics against 48 nosocomial strains was studied by the Kirby-Bauer method. The most active antibiotics were, in decreasing order, amikacin, carbenicillin, tobramycin, minocycline, dibekacin, doxycycline, sisomycin, trimethoprim-sulphamethoxacole, ticarcillin and piperacillin. The strains were also tested against 4 new beta-lactam antibiotics, and the MICs were determined by an agar dilution method. N-formimidoyl-thienamycin was found to be the most active against Acinetobacter and ceftazidime was considerably more active than apalcillin and cefotaxime.
Subject
Biochemistry (medical),Cell Biology,Biochemistry,General Medicine
Cited by
21 articles.
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