Abstract
For decades, Salmonella enterica serovar Enteritidis has been among the most prevalent serovars reported worldwide. However, it was rarely encountered in Mauritius until 2007; since then the number of non-typhoidal Salmonella serogroup O:9 (including serovar Enteritidis) increased. A study was conducted to investigate the genetic relatedness between S. Enteritidis isolates recovered in Mauritius from food and clinical specimens (stool, blood, and exudate). Forty-seven isolates of S. Enteritidis obtained in 2009 from human stools, blood cultures and exudates, and from food specimens were characterized by antimicrobial susceptibility testing and Multiple-Locus Variable-number tandem repeat Analysis (MLVA). With the exception of a single isolate which demonstrated intermediate susceptibility to streptomycin, all isolates were pansusceptible to the 14 antimicrobials tested. Thirty seven out of the 47 isolates (78.7%) exhibited an indistinguishable MLVA profile which included isolates from ready-to-eat food products, chicken, and human clinical isolates from stool, blood and exudate. The presence of highly related strains in both humans and raw chicken, and the failure to isolate the serovar from other foods, suggests that poultry is the main reservoir of S. Enteritidis in Mauritius and that the majority of human cases are associated with chicken consumption which originated from one major producer. Stool isolates were indistinguishable or closely related to blood and exudate isolates, indicating that, besides gastroenteritis, the same strain caused invasive infections. Control of S.Enteritidis by poultry breeders would lower the financial burden associated with morbidity in humans caused by this organism in Mauritius.
Highlights
Salmonella enterica serovar Enteritidis has been among the most prevalent serovars reported worldwide
In 2007, nontyphoidal Salmonella serogroup O:9 was isolated from two specimens and subsequently, its prevalence increased tremendously in 2008 to become the leading serogroup among stools and blood isolates (CHL data)
There was a simultaneous rise in the number of Non-typhoidal salmonellae (NTS) isolates from blood cultures in 2008 and 2009, with Salmonella serogroup O:9 accounting for about 60% of the cases in these years
Summary
Salmonella enterica serovar Enteritidis has been among the most prevalent serovars reported worldwide It was rarely encountered in Mauritius until 2007; since the number of non-typhoidal Salmonella serogroup O:9 (including serovar Enteritidis) increased. Enteritidis isolates recovered in Mauritius from food and clinical specimens (stool, blood, and exudate). Enteritidis obtained in 2009 from human stools, blood cultures and exudates, and from food specimens were characterized by antimicrobial susceptibility testing and Multiple-Locus Variable-number tandem repeat Analysis (MLVA). Thirty seven out of the 47 isolates (78.7%) exhibited an indistinguishable MLVA profile which included isolates from ready-to-eat food products, chicken, and human clinical isolates from stool, blood and exudate. In 2007, nontyphoidal Salmonella serogroup O:9 was isolated from two specimens and subsequently, its prevalence increased tremendously in 2008 to become the leading serogroup among stools and blood isolates (CHL data)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
