Answers are grounded in this paper and cite their sources.
We examined the distribution of class I integrons and SXT elements in Vibrio cholerae O1 El Tor strains, isolated in Calcutta, India, before and after the V. cholerae O139 outbreak in 1992. Class I integrons, with aadA1 gene cassette, were detected primarily in the pre-O139 strains; the SXT element was found mainly in the post-O139 strains.
No takes yet. Share an insight, caveat, or question.
Amita et al. (2003) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: