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Drain systems at the source of an epidemic of salmonellosis
Dr. Caroline Huot, medical advisor at the National Institute of Public Health of Quebec, has just published with her colleagues an article entitled “ Investigation of a Salmonella Montevideo Outbreak Related to the Environmental Contamination of a Restaurant Kitchen Drainage System, Quebec, Canada , 2020–2021 in the Journal of Food Protection . The objective of the investigation? Tracing the origin of an enteric salmonella epidemic that occurred in the Quebec region.
In May 2020, the Public Health Department of the Integrated University Health and Social Services Center of the Capitale-Nationale received a report from the Quebec Public Health Laboratory announcing a cluster of three cases of Salmonella of the Montevideo serotype . After an epidemiological investigation and genomic sequencing of the strains, the team was able to detect 67 cases and conclude that the source was probably the kitchen drain of a restaurant in the area. A somewhat surprising observation, knowing that this bacterium is most often contracted through the consumption of contaminated food. The earlier occurrence of a fire in the kitchen may have played a role in the contamination of the restaurant's drains.
Several cleaning and disinfection methods have been used repeatedly. Cases in the community appear to have ceased by the time environmental swabs at restaurant sites came back negative repeatedly and consecutively.
The results of the study suggest that professional public health teams should consider drainage systems (plumbing) and possible aerosolization of bacteria as a potential source of a restaurant-related salmonellosis outbreak.
August 2, 2023
Drain systems at the source of an epidemic of salmonellosis
Dr. Caroline Huot, medical advisor at the National Institute of Public Health of Quebec, has just published with her colleagues an article entitled “ Investigation of a Salmonella Montevideo Outbreak Related to the Environmental Contamination of a Restaurant Kitchen Drainage System, Quebec, Canada , 2020–2021 in the Journal of Food Protection . The objective of the investigation? Tracing the origin of an enteric salmonella epidemic that occurred in the Quebec region.
In May 2020, the Public Health Department of the Integrated University Health and Social Services Center of the Capitale-Nationale received a report from the Quebec Public Health Laboratory announcing a cluster of three cases of Salmonella of the Montevideo serotype . After an epidemiological investigation and genomic sequencing of the strains, the team was able to detect 67 cases and conclude that the source was probably the kitchen drain of a restaurant in the area. A somewhat surprising observation, knowing that this bacterium is most often contracted through the consumption of contaminated food. The earlier occurrence of a fire in the kitchen may have played a role in the contamination of the restaurant's drains.
Several cleaning and disinfection methods have been used repeatedly. Cases in the community appear to have ceased by the time environmental swabs at restaurant sites came back negative repeatedly and consecutively.
The results of the study suggest that professional public health teams should consider drainage systems (plumbing) and possible aerosolization of bacteria as a potential source of a restaurant-related salmonellosis outbreak.
August 2, 2023