Emergence of Fluoroquinolone-Resistant Strains of Vibrio cholerae O1 Biotype El Tor among Hospitalized Patients with Cholera in Calcutta, India

Abstract
Ciprofloxacin and norfloxacin are broad-spectrum fluoroquinolones and possess excellent activity against Vibrio cholerae O1 and O139 serogroups ([6][1]). Clinical studies have shown that these drugs are effective in treatment of cholera in adults and children ([2-4][2]). For the past 11 years, we