Molecular analysis of vibrio cholerae o1, o139, non-o1, and non-o139 strains: clonal relationships between clinical and environmental isolates

Rajiv Gandhi Centre for Biotechnology, Jagathy, Thiruvananthapuram 695 014, India; Center for Marine Biotechnology, University of Maryland Biotechnology Institute, Baltimore, Maryland 212022; Department of Cell and Molecular Biology, University of Maryland, College Park, Maryland 207426; School of Public Health, University of São Paulo, São Paulo, SP, 01246-904, São Paulo, Brazil; Department of Microbiology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221 005, India; and Department of Environmental Analysis and Design, University of California, Irvine, California 926974