Acinetobacter baumannii is an opportunistic pathogen responsible for nosocomial infections due to biofilm formation on the surface of implantable medical devices. Thirty (30) strains of A. baumannii were isolated from medical devices and tested for their ability to form a biofilm. The factors that may influence this process, such as the hydrophobicity of the bacterial wall, temperature, duration of implantation and the nature of the medical device, were also investigated. Strains were able to form a biofilm; however this process was more substantial at 30°C than at 37°C and was maximal after 96 h of incubation. Strains seem to adhere better to silicone and latex than to polyvinylchloride (PVC) and no apparent relationship was found between hydrophobicity and biofilm formation.
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Imane et al. (2014) studied this question.