Emergence of Tetracycline Resistant Vibrio cholerae O1 Biotype El Tor Serotype Ogawa with Classical ctxB Gene from a Cholera Outbreak in Odisha, Eastern India

Table 1

Comparison of V. cholerae strains isolated during two cholera outbreaks in 2007 and 2010 from Rayagada, Odisha.

Year of isolation	V. cholerae strain	Gene traits	Antibiogram	Class 1 integrons	SXT	Antibiotic resistant gene	Reference
2007	O1 El Tor Ogawa	ompW^+, ctxB^+, zot^+, rfbO1^+, tcp^+, ace^+, hlyA^+, ompU^+, rtx^+, and toxR^+	Cot, Nal, Pol, Spe, Str, Sul, Tri, Amp, Tet, Chl, Ery. Cip, and Rif	+	+	aadA2^+, blaP1^−, dfrA1^+, floR^−, and strA^+	[10, 19]
2010	O1 El Tor Ogawa	ompW^+, ctxB^+, zot^+, rfbO1^+, tcp^+, ace^+, hlyA^+, ompU^+, rtx^+, and toxR^+	Cot, Nal, Pol, Spe, Str, Sul, Tet, Tri, O/129, Amp, Chl, Ery. Cip, and Rif	+	+	aadA2^+, blaP1^−, dfrA1^+, floR^−, and strA^+	This study

Cot: co-trimoxazole, Nal: nalidixic acid, Pol: polymyxin B, Spe: spectinomycin, Str: streptomycin, Sul: sulfamethoxazole, Tet: tetracycline, Tri: trimethoprim, Amp: ampicillin, and Ery: erythromycin.