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Journal of Clinical Microbiology, March 1998, p. 843-844, Vol. 36, No. 3
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Molecular Evidence that a Distinct Vibrio cholerae O1 Biotype El Tor Strain in Calcutta May Have Spread to the African Continent

Charu Sharma,1 Amit Ghosh,1 A. Dalsgaard,2 Anita Forslund,2 R. K. Ghosh,3 S. K. Bhattacharya,4 and G. Balakrish Nair4,*

Institute of Microbial Technology, Chandigarh,1 and Indian Institute of Chemical Biology,3 and National Institute of Cholera and Enteric Diseases, Beliaghata,4 Calcutta, India, and Royal Veterinary and Agricultural University, Frederiksberg, Denmark2

Received 15 July 1997/Returned for modification 18 July 1997/Accepted 8 December 1997

We present molecular evidence that a distinct genotype of Vibrio cholerae O1 which appeared in Calcutta, India, in September 1993 and which is characterized by a unique ribotype that is not found in the standardized ribotyping scheme of V. cholerae and that shows a specific pulsed-field gel electrophoresis profile may have spread to the west African country of Guinea-Bissau where it was responsible for an epidemic of cholera which began in October 1994 and continued into 1996.

* Corresponding author. Mailing address: National Institute of Cholera and Enteric Diseases, P-33, CIT Rd., Scheme XM, Beliaghata, Calcutta 700 010, India. Phone: 91-33-350-1176. Fax: 91-33-350-5066. E-mail: krishgb{at}giascl01.vsnl.net.in.

Journal of Clinical Microbiology, March 1998, p. 843-844, Vol. 36, No. 3
0095-1137/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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