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Toxigenic Vibrio Cholerae Identified in Estuaries of Tanzania Using PCR Techniques

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dc.creator Dalusi, Lucy
dc.creator Lyimo, Thomas J.
dc.creator Lugomela, Charles
dc.creator Hosea, Ken M.
dc.creator Sjöling, Sara
dc.date 2016-06-18T18:14:26Z
dc.date 2016-06-18T18:14:26Z
dc.date 2015
dc.date.accessioned 2018-03-27T08:23:06Z
dc.date.available 2018-03-27T08:23:06Z
dc.identifier Dalusi, L., Lyimo, T.J., Lugomela, C., Hosea, K.M. and Sjöling, S., 2015. Toxigenic Vibrio cholerae identified in estuaries of Tanzania using PCR techniques. FEMS microbiology letters, 362(5), p.fnv009.
dc.identifier http://hdl.handle.net/20.500.11810/2580
dc.identifier 10.1093/femsle/fnv009
dc.identifier.uri http://hdl.handle.net/20.500.11810/2580
dc.description The current study assessed the occurrence of the Vibrio cholerae serogroups O1 and O139 in environmental samples along salinity gradients in three selected estuaries of Tanzania both through culture independent methods and by cultured bacteria. Occurrence of V. cholerae was determined by PCR targeting the V. cholerae outer membrane protein gene ompW. Furthermore, the presence of toxigenic strains and serogroups O1 and O139 was determined using multiplex PCR with specific primers targeting the cholera toxin gene subunit A, ctxA, and serotype specific primers, O1-rfb and O139-rfb, respectively. Results showed that V. cholerae occurred in approximately 10% (n = 185) of both the environmental samples and isolated bacteria. Eight of the bacteria isolates (n = 43) were confirmed as serogroup O1 while one belonged to serogroup O139, the first reported identification of this epidemic strain in East African coastal waters. All samples identified as serogroup O1 or O139 and a number of non-O1/O139 strains were ctxA positive. This study provides in situ evidence of the presence of pathogenic V. cholerae O1 and O139 and a number of V. cholerae non-O1/O139 that carry the cholera toxin gene in estuaries along the coast of Tanzania.
dc.language en
dc.subject Cholera
dc.subject estuaries
dc.subject Vibrio cholerae
dc.subject Sediment
dc.subject Tanzania
dc.subject East Africa
dc.title Toxigenic Vibrio Cholerae Identified in Estuaries of Tanzania Using PCR Techniques
dc.type Journal Article


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