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Journal of Clinical Microbiology, May 2008, p. 1655-1658, Vol. 46, No. 5
0095-1137/08/$08.00+0     doi:10.1128/JCM.02047-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

Comparison of the Copan ESwab System with Two Amies Agar Swab Transport Systems for Maintenance of Microorganism Viability{triangledown}

Kenneth G. Van Horn,* Carol D. Audette, Denise Sebeck, and Kelly A. Tucker{dagger}

Focus Diagnostics, Cypress, California

Received 19 October 2007/ Returned for modification 13 December 2007/ Accepted 10 March 2008

Swab transport systems are used for a variety of specimen types and must maintain organism viability throughout the transport process. The Copan ESwab is a new nylon-flocked swab designed to optimize specimen collection and to minimize entrapment of the specimen. We used the quantitative elution method with recommended strains, as described in CLSI document M40-A, to evaluate the ESwab for maintenance of viability of aerobic and anaerobic microorganisms for 0, 6, 24, and 48 h during room temperature and refrigerated temperature storage. The Becton Dickinson CultureSwab MaxV swab and the Remel BactiSwab were used as comparators. The ESwab met CLSI acceptance criteria for all aerobic isolates stored at both temperatures and for all anaerobic isolates stored at refrigerated temperature. The ESwab also met CLSI criteria for four of five anaerobic strains at room temperature. Prevotella melaninogenica was not recovered after 24 or 48 h of room temperature storage with any of the three swab transport systems tested. Overall, the ESwab was equivalent to the Becton Dickinson CultureSwab MaxV swab in organism recovery but recovered more isolates than Remel BactiSwab.

* Corresponding author. Mailing address: Focus Diagnostics, Inc., 5785 Corporate Ave., Cypress, CA 90630. Phone: (714) 503-1392. Fax: (714) 484-1296. E-mail: kvanhorn{at}focusdx.com

{triangledown} Published ahead of print on 19 March 2008.

{dagger} Present address: Agensys, 1545 17th Street, Santa Monica, CA 90404.

Journal of Clinical Microbiology, May 2008, p. 1655-1658, Vol. 46, No. 5
0095-1137/08/$08.00+0     doi:10.1128/JCM.02047-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.



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