Surveillance and outbreak reports Open Access
Like 0


We conducted an unmatched retrospective case-control study to investigate an upsurge of non-travel-related sporadic cases of infection with Salmonella enterica subsp. enterica serotype Enteritidis phage type 14b with antimicrobial resistance to nalidixic acid and partial resistance to ciprofloxacin (S. Enteritidis PT 14b NxCpL) that was reported in England from 1 September to 31 December 2009. We analysed data from 63 cases and 108 controls to determine whether cases had the same sources of infection as those found through investigation of 16 concurrent local food-borne outbreaks in England and Wales. Multivariable logistic regression analysis adjusting for age and sex identified food consumption at restaurants serving Chinese or Thai cuisine (odds ratio (OR): 4.4; 95% CI: 1.3-14.8; p=0.02), egg consumed away from home (OR: 5.1; 95% CI: 1.3-21.2; p=0.02) and eating vegetarian foods away from home (OR: 14.6; 95% CI: 2.1-99; p=0.006) as significant risk factors for infection with S. Enteritidis PT 14b NxCpL. These findings concurred with those from the investigation of the16 outbreaks, which identified the same Salmonella strain in eggs from a specified source outside the United Kingdom. The findings led to a prohibition of imports from this source, in order to control the outbreak. .


Article metrics loading...

Loading full text...

Full text loading...

Submit comment
Comment moderation successfully completed
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error