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Ehn Börjesson, Stina-Mina
Publications (2 of 2) Show all publications
Collin, B., Rehnstam-Holm, A.-S., Ehn Börjesson, S.-M., Mussagy, A. & Hernroth, B. (2013). Characteristics of potentially pathogenic vibrios from subtropical Mozambique compared with isolates from tropical India and boreal Sweden. FEMS Microbiology Ecology, 83(2), 255-264
Open this publication in new window or tab >>Characteristics of potentially pathogenic vibrios from subtropical Mozambique compared with isolates from tropical India and boreal Sweden
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2013 (English)In: FEMS Microbiology Ecology, ISSN 0168-6496, E-ISSN 1574-6941, Vol. 83, no 2, p. 255-264Article in journal (Refereed) Published
Abstract [en]

Reported outbreaks of Vibrio parahaemolyticus have increased worldwide, particularly in regions of high seafood consumption. In Mozambique, seafood constitutes an important food resource and diarrheal diseases are common among its inhabitants. Edible clams were collected in Maputo Bay during both the dry and rainy seasons, with the results showing the number of viable counts of vibrios in clams to peak during the latter. Vibrio parahaemolyticus was the predominant species identified among the isolated strains. Although only one of 109 total strains carried the tdh virulence gene, 69% of isolates showed evidence of hemolytic capacity when subjected to a functional test. Similar virulence patterns and biochemical properties were found in strains isolated from Indian and Swedish marine waters. Antibiotic resistance was, however, more pronounced in strains isolated from these latter two environments.

Keywords
Vibrio spp, Vibrio parahaemolyticus, qPCR, probe hybridization, TCBS-agar, persistence in clams, PhenePlate system, antibiotic resistance, hemolysis
National Category
Microbiology
Identifiers
urn:nbn:se:hkr:diva-9610 (URN)10.1111/j.1574-6941.2012.01471.x (DOI)000313252600001 ()
Available from: 2012-08-22 Created: 2012-08-22 Last updated: 2017-12-07Bibliographically approved
Ehn Börjesson, S.-M., Kühn, I., Hernandez, J., Olsen, B. & Rehnstam-Holm, A.-S. (2013). Enterococcus spp in wastewater and in mallards (Anas platyrhynchos) exposed to wastewater wetland. International Journal of Environmental Protection, 3(10), 1-12
Open this publication in new window or tab >>Enterococcus spp in wastewater and in mallards (Anas platyrhynchos) exposed to wastewater wetland
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2013 (English)In: International Journal of Environmental Protection, ISSN 2226-6437, Vol. 3, no 10, p. 1-12Article in journal (Refereed) Published
Abstract [en]

In this study, twelve Mallards living in an artificial wastewater wetland were exposed to treated wastewater containing 1 x 103- 4 x 103 enterococci 100 ml-1 for a period of 55 days. Faecal samples were collected before, during and after exposure and analysed for Enterococcus spp. The isolates were phenotyped using the PhenePlateTM system. 270 Enterococcus spp. of Mallard origin were analysed, together with 116 Enterococcus spp. isolates from treated wastewater and from incoming raw wastewater. In general, the Mallard and wastewater enterococci isolates belonged to different phenotypes, although several sharing identical phenotypic profiles were found. One E. faecalis phenotype was found in Mallards before, during and after exposure to treated wastewater, as well as in raw and treated wastewater. Our results indicate that there is a common source of enterococci for Mallards and humans. We propose an increased focus on emissions of human bacteria and on systems that mediate their transfer to wild animals.

Keywords
Enterococcus Faecalis, Enterococcus Faecium, Anas Platyrhynchos, Mallard, Urban Wastewater, Sewage, Wastewater Wetland
National Category
Biological Sciences
Identifiers
urn:nbn:se:hkr:diva-11446 (URN)
Available from: 2013-12-16 Created: 2013-12-16 Last updated: 2014-06-24Bibliographically approved
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