Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Volume 15, Number 2—February 2009

Letter

Outbreaks Caused by New Variants of Vibrio cholerae O1 El Tor, India

Neelam TanejaComments to Author , Arti Mishra, Garima Sangar, Gagandeep Singh, and Meera Sharma
Author affiliations: Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India

Main Article

Table

Phenotypic and genotypic traits of Vibrio cholerae O1 clinical strains isolated from northern India, 2002–2007*

Year of isolation or type of strain Phenotypic tests
PCR amplicons
VP Polymyxin B (50 U) susceptibility CCA Sheep erythrocyte hemolysis tcpA ctxB (MAMA-PCR) rstR
2002 (n = 20) + Resistant + + E E E
2003 (n = 4) + Resistant + + E E E
2004 (n = 19) + Resistant + + E E E
2007 (n = 26) + Resistant + + E E + C (n = 21)† E
Environmental (n = 1) + Resistant + + E E + C E
Classical 569B Sensitive C C C
El Tor N16961 + Resistant + + E E E
Hybrid NICED, India + Resistant + + E C E + C

*VP, Voges-Proskauer; CCA, chick cell agglutination; MAMA, mismatch amplification mutation assay; +, positive; –, negative; E, El Tor type; C, classical type; NICED, National Institute of Cholera and Enteric Diseases, Kolkata, India.
†Remainder had ctxB of El Tor type.

Main Article

TOP