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  Table of Contents  
CORRESPONDENCE
Year : 2012  |  Volume : 30  |  Issue : 4  |  Page : 482
 

A few remarks on isolation, speciation and antibiogram of clinically relevant nondiphtheroidal corynebacteria (diphtheroids)


Department of Microbiology, Institute of Post-Graduate Medical Education & Research-Kolkata, India

Date of Submission14-Jun-2012
Date of Acceptance01-Aug-2012
Date of Web Publication24-Nov-2012

Correspondence Address:
Rupali Dey
Department of Microbiology, Institute of Post-Graduate Medical Education & Research-Kolkata
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0255-0857.103781

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How to cite this article:
Dey R, Rit K, Chakraborty B, Maiti PK. A few remarks on isolation, speciation and antibiogram of clinically relevant nondiphtheroidal corynebacteria (diphtheroids). Indian J Med Microbiol 2012;30:482

How to cite this URL:
Dey R, Rit K, Chakraborty B, Maiti PK. A few remarks on isolation, speciation and antibiogram of clinically relevant nondiphtheroidal corynebacteria (diphtheroids). Indian J Med Microbiol [serial online] 2012 [cited 2019 Jun 24];30:482. Available from: http://www.ijmm.org/text.asp?2012/30/4/482/103781


Dear Editor,

With great interest, we went through the article of Reddy et al. in January 2012 issue of IJMM, [1] entitled "Isolation, speciation and antibiogram of clinically relevant non-diphtheroidal corynebacteria (Diphtheroids)". Some related data on this study could make this more relevant.

In this report, total number of samples with break-up for each specimen from which the 114 diphtheroids were isolated is needed, so that specimen-wise incidence is understood. Information regarding probable reasons for very high incidence in that particular locality during specified time period is also needed, because no other centre from India has reported similar findings. Surprisingly, search for such data in other publications from abroad showed a similar article on non-diphtherial Corynebacterium infections without the data for total number of samples tested. [2]

Diphtheroids are known to be very rare causative agents of bacterial meningitis. A five-year study from Brazil reported only one case of C. amycolatum from CSF, and a review article presents Arcanobacterium and C. aquaticumas very rare causes of intracranial infections. [2],[3] In this study,diphtheroids have been isolated from CSF sample of one meningitis case, though total number of CSF samples tested and number of other organisms found has not been mentioned.

In our experience and also in published data, [4] pus and wound cultures often show polymicrobial picture on Gram stain as well as culture with prominent growth of diphtheroids and some other bacteria like Staphylococcus aureus. It is not specified whether these cases were included or not.

The significance of catheter tip isolates repeatedly yielding diphtheroids without corresponding result for blood stream infection and absence of clinical features suggestive of septicaemia also needs to be discussed. The policy of management in such cases is to be rationalised.

 
 ~ References Top

1.Reddy BS, Chaudhury A, Kalawat A, Jayaprada R, Reddy GS, Ramana BV. Isolation, speciation and antibiogram of clinically relevant non-diphtheroidal corynebacteria (Diphtheroids). Indian J Med Microbiol 2012;30:52-7.  Back to cited text no. 1
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2.Camello TC, Ferreira MG, Ana L, Formiga, Luiz CD, Marques EA. Nondiphtherial Corynebacterium species isolated from clinical specimens of patients in a university hospital, Rio de Janeiro, Brazil. Braz J Microbiol 2003;34:39- 44.  Back to cited text no. 2
    
3.Coyle MB, Lipsky BA. Coryneform bacteria in infectious diseases: Clinical and laboratory aspects. ClinMicrobiol Rev1990;3:227-46.  Back to cited text no. 3
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4.Bowler PG, Duerden BI, Armstrong DG. Wound microbiology and associated approaches to wound management. ClinMicrobiol Rev 2001;14:244-69.  Back to cited text no. 4
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