Vibrio cholerae O1 associated with recent endemic cholera shows temporal changes in serotype, genotype, and drug-resistance patterns in Bangladesh.

"the partial sequences of the genes were submitted to genbank (accession numbers: mk992813 mk992814 mk992815). availability of data and materials the pcr amplicon sequence data of blaper-3 blaoxa-1 and aac(6?)-ib-cr genes were deposited in ncbi gene bank under accession no mk992813"

"Declarations Ethics approval and consent to participateEthical approval and consent to participate was obtained from the ethical committee of International Center for Diarrheal Disease Research, Bangladesh (icddr, b). Consent for publicationYes. Competing interestsNA is the Editor in Chief of Gut Pathogens but he did not oversee peer review and/or decision-making process for this article. All other authors declare that they have no competing interests. Competing interests NA is the Editor in Chief of Gut Pathogens but he did not oversee peer review and/or decision-making process for this article. All other authors declare that they have no competing interests."

"Funding This research was partially supported by the Foreign, Commonwealth and Development Office (FCDO/Wellcome) (215704/Z/19/Z), icddr,b, Tufts University, USA and University of California, Berkeley, USA."