Clonal occurrence of Salmonella Weltevreden in cultured shrimp in the Mekong Delta, Vietnam

TY - JOUR

T1 - Clonal occurrence of Salmonella Weltevreden in cultured shrimp in the Mekong Delta, Vietnam

AU - Uddin, Gazi Md Noor

AU - Larsen, Marianne Halberg

AU - Barco, Lisa

AU - Phu, Tran Minh

AU - Dalsgaard, Anders

PY - 2015/7/29

Y1 - 2015/7/29

N2 - This study investigated the occurrence, serovar and antimicrobial resistance of Salmonella spp. in shrimp samples from intensive and extensive farms located in three different provinces in the Mekong Delta, Vietnam. Shrimp from 11 of the 48 farms all contained S. Weltevreden, except for one farm yielding S. Agona, with no difference in Salmonella occurrence between the two production systems. Pulsed field gel electrophoresis (PFGE) of S. Weltevreden showed closely related XbaI pulse types, suggesting a clonal relationship despite the farms and shrimp samples being epidemiologically unrelated. S. Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm environments compared to other Salmonella serovars.

AB - This study investigated the occurrence, serovar and antimicrobial resistance of Salmonella spp. in shrimp samples from intensive and extensive farms located in three different provinces in the Mekong Delta, Vietnam. Shrimp from 11 of the 48 farms all contained S. Weltevreden, except for one farm yielding S. Agona, with no difference in Salmonella occurrence between the two production systems. Pulsed field gel electrophoresis (PFGE) of S. Weltevreden showed closely related XbaI pulse types, suggesting a clonal relationship despite the farms and shrimp samples being epidemiologically unrelated. S. Weltevreden was susceptible to most antimicrobials tested, with a few strains being resistant to florfenicol, chloramphenicol, sulfamethoxazole or trimethoprim. Future studies of the ecology of S. Weltevreden should establish if this serovar may survive better and even multiply in warm-water shrimp farm environments compared to other Salmonella serovars.

U2 - 10.1371/journal.pone.0134252

DO - 10.1371/journal.pone.0134252

M3 - Journal article

C2 - 26222547

SN - 1932-6203

VL - 10

JO - PLOS ONE

JF - PLOS ONE

IS - 7

M1 - e0134252

ER -