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Journal of Clinical Microbiology, September 2006, p. 3426-3428, Vol. 44, No. 9
0095-1137/06/$08.00+0     doi:10.1128/JCM.00873-06

Capsule Production in Bacillus cereus Strains Associated with Severe Pneumonia

David Sue,1,{dagger} Alex R. Hoffmaster,1 Tanja Popovic,2 and Patricia P. Wilkins1*

Bacterial Zoonoses Branch, Division of Foodborne, Bacterial and Mycotic Diseases, National Center for Zoonotic, Vector-borne and Enteric Diseases,1 Office of the Chief Science Officer, Centers for Disease Control and Prevention, 1600 Clifton Rd. NE, Atlanta, Georgia 303332

Received 25 April 2006/ Returned for modification 5 July 2006/ Accepted 14 July 2006

We identified three encapsulated Bacillus cereus strains, isolated from patients with severe pneumonia, in a collection of B. cereus isolates associated with human illness. We found that the extent of capsule expression was influenced by culturing conditions. Our findings highlight consequent clinical and laboratory diagnostic challenges posed by such isolates.


* Corresponding author. Mailing address: Centers for Disease Control and Prevention, 1600 Clifton Road, Mailstop D-11, Atlanta, GA 30333. Phone: (404) 639-3297. Fax: (404) 639-3023. E-mail: pwilkins{at}cdc.gov.

{dagger} Present address: Department of Microbiology and Immunology, Emory University, School of Medicine, Atlanta, GA 30322.


Journal of Clinical Microbiology, September 2006, p. 3426-3428, Vol. 44, No. 9
0095-1137/06/$08.00+0     doi:10.1128/JCM.00873-06




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