Preferential association of the heat-stable enterotoxin gene (stn) with environmental strains of Vibrio cholerae belonging to the O14 serogroup
Sarkar, B.; Bhattacharya, T.; Ramamurthy, T.; Shimada, T.; Takeda, Y.; Balakrish Nair, G.
Epidemiology and Infection 129(2): 245-251
ISSN/ISBN: 0950-2688 PMID: 12403100 DOI: 10.2307/3864952
Toxigenic Vibrio cholerae O1 and O139 serogroups have the capacity of causing epidemic and pandemic cholera but are infrequently found in the environment. The other serogroups are abundant in aquatic environments but do not possess the virulence genes necessary for causing the disease. Of the 559 environmental strains of V. cholerae, collected during different periods from environmental samples in Calcutta, 9 (1.6%) harboured the heat-stable enterotoxin gene (stn).