Abstract
ABSTRACT This report is the description of the first case in Brazil of community-acquired bloodstream infection caused byAcinetobacter radioresistens. A 73-year-old male patient with Alzheimer’s and Parkinson’s disease was hospitalized and diagnosed with pneumonia at a general hospital. MacConkey agar pure culture was obtained from blood cultures. Conventional tests identified the isolate as Acinetobacter baumannii complex. However, the matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) technique identified it as Acinetobacter radioresistens. The isolate was sensitive to all antibiotics tested by the disk diffusion method, including carbapenem. However, blaoxa-23 gene was detected by the polymerase chain reaction (PCR) assay. Acinetobacter radioresistens can be considered an important agent of opportunistic infections in immunocompromised patients, a potential disseminator of resistance genes.
Highlights
Acinetobacter spp. has shown to be a potential opportunistic pathogen, which mainly affects patients with some comorbidity[1]
The special attention given to this species should be directed towards other emerging members of this genus, such as Acinetobacter radioresistens
A 73-year-old male patient was hospitalized at a general hospital localized in Natal, Brazil Northeast, presenting fever, respiratory secretions and wheezing on chest auscultation
Summary
Acinetobacter spp. has shown to be a potential opportunistic pathogen, which mainly affects patients with some comorbidity[1]. The special attention given to this species should be directed towards other emerging members of this genus, such as Acinetobacter radioresistens. This species shows great adaptability to an environment with low relative humidity, and great persistence and survival in hospital environments, under such conditions[3]. It is considered a possible reservoir and disseminator of genes that confer resistance to carbapenem[4]. There are a few clinical case reports involving A. radioresistens[5,6,7], of which only one describes a community-acquired bloodstream infection, from a human immunodeficiency virus (HIV)-positive patient[7]
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