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“Overview of the Microbial Characteristics, Taxonomy, and Epidemiology of Acinetobacter

  • Harald Seifert
  • Lenie Dijkshoorn
Chapter
Part of the Infectious Agents and Pathogenesis book series (IAPA)

Introduction

Microbial Characteristics

Bacteria belonging to the genus Acinetobacter share the following characteristics that allow for presumptive identification at the genus level: they are gram-negative, strictly aerobic, catalase-positive, oxidase-negative, nonmotile, nonfermenting coccobacilli. Gram staining shows short, plump, Gram-negative rods that are difficult to destain and may therefore be misidentified as either Gram-negative or Gram-positive cocci (hence the former designation Mimae). Most Acinetobacter strains grow between 20°C and 37°C with most strains having an optimum at 33–35°C. Acinetobacter species of human origin grow well on solid media that are routinely used in clinical microbiology laboratories such as sheep blood agar or tryptic soy agar at 37°C incubation temperature. Strains of some species grow at higher temperatures (e.g., growth at 44°C is a characteristic feature of A. baumannii). Acinetobactersform smooth, sometimes mucoid, grayish-white colonies;...

Keywords

Species Identification Genomic Species Epidemic Spread Acinetobacter Species Diagnostic Microbiology 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

Alexandr Nemec is gratefully acknowledged for critical reading of the text, and Danuta Sefanik, Tanny van der Reijden, and Beppie van Strijen for technical support.

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© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Institute for Medical Microbiology, Immunology and HygieneUniversity of CologneGermany

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