|Year : 2016 | Volume
| Issue : 1 | Page : 118
Blood stream infection by Chryseobacterium species in an immunocompetent individual
P Sharma, S Gupta, S Verma, DV Singh, A Kanga
Department of Microbiology, Indira Gandhi Medical College, Shimla, Himachal Pradesh, India
|Date of Submission||22-Aug-2014|
|Date of Acceptance||06-May-2015|
|Date of Web Publication||15-Jan-2016|
Department of Microbiology, Indira Gandhi Medical College, Shimla, Himachal Pradesh
Source of Support: None, Conflict of Interest: None
|How to cite this article:|
Sharma P, Gupta S, Verma S, Singh D V, Kanga A. Blood stream infection by Chryseobacterium species in an immunocompetent individual. Indian J Med Microbiol 2016;34:118
|How to cite this URL:|
Sharma P, Gupta S, Verma S, Singh D V, Kanga A. Blood stream infection by Chryseobacterium species in an immunocompetent individual. Indian J Med Microbiol [serial online] 2016 [cited 2019 Sep 23];34:118. Available from: http://www.ijmm.org/text.asp?2016/34/1/118/167678
The article by Deepa et al. entitled 'Myroides odoratus and Chryseobacterium indologenes: Two rare isolates in the immunocompromised' was very informative. We would like to share our experience on the Chryseobacterium spp. isolated in our clinical microbiology laboratory from blood culture.
A 55-year-old man was admitted with complaints of high-grade fever and pain abdomen for 2 days and was apparently immunocompetent. On computed tomography imagining, he was diagnosed with mucocele of gallbladder. Blood culture examination was sterile. Patient was managed conservatively, and piperacillin-tazobactam was continued for 7 days. After 3 weeks, he again developed fever. Blood culture repeated which revealed yellow colonies on blood agar but no growth on MacConkey agar (MA). Examination, imagining and repeat blood culture were done after taking informed consent. Bacteria were filamentous, Gram-negative, size 5–7 µm × 0.5 µm, non-sporing, arranged singly. The organism was identified using standard methods of identification. The pigment of flexirubin type was demonstrated by colour change from yellow to red by adding 10% KOH solution.
Antimicrobial susceptibility testing (AST) done by Kirby–Bauer disc diffusion method and interpreted by CLSI guidelines for non-Enterobacteriaceae. It was susceptible to ciprofloxacin, levofloxacin, tetracycline, ceftazidime, cefotaxime, ceftriaxone, cefepime, azithromycin, gentamicin, amikacin, tobramycin, piperacillin-tazobactam, trimethoprim-sulphamethoxazole, aztreonam, imipenem, meropenem. Patient improved on azithromycin. Our isolate was dissimilar from previous reports by being sensitive to most antibiotics.
Chryseobacterium is not a human commensal, and its infections are ill-defined due to the rare recovery from clinical samples. It is frequently discarded as contaminanting Gram-positive cocci if the smear is not performed as they fail to grow on MA. It is an important pathogen which requires accurate identification and AST testing.
| ~ References|| |
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