Colonisation of lettuce by <i>Listeria Monocytogenes</i>

Kyere, Emmanuel O.; Palmer, John W.; Wargent, Jason J.; Fletcher, Graham C.; Flint, Steve

doi:10.1111/ijfs.13905

Cited by 24 publications

(12 citation statements)

References 86 publications

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“…In addition, FDA is developing prevention strategies for ready-to-eat foods, recognizing that not all frozen vegetables are considered traditionally ready to eat. In addition, industry and academic partners have been conducting research on preventing L. monocytogenes contamination of leafy greens ( 30 ) and in facilities that manufacture frozen produce and bagged salad.…”

Section: Discussionmentioning

confidence: 99%

Investigations of Possible Multistate Outbreaks of Salmonella, Shiga Toxin–Producing Escherichia coli, and Listeria monocytogenes Infections — United States, 2016

Marshall¹,

Nguyen²,

Ablan³

et al. 2020

MMWR Surveill. Summ.

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Problem/Condition Salmonella , Shiga toxin–producing Escherichia coli (STEC), and Listeria monocytogenes are the leading causes of multistate foodborne disease outbreaks in the United States. Responding to multistate outbreaks quickly and effectively and applying lessons learned about outbreak sources, modes of transmission, and risk factors for infection can prevent additional outbreak-associated illnesses and save lives. This report summarizes the investigations of multistate outbreaks and possible outbreaks of Salmonella , STEC, and L. monocytogenes infections coordinated by CDC during the 2016 reporting period. Period Covered 2016. An investigation was considered to have occurred in 2016 if it began during 2016 and ended on or before March 31, 2017, or if it began before January 1, 2016, and ended during March 31, 2016–March 31, 2017. Description of System CDC maintains a database of investigations of possible multistate foodborne and animal-contact outbreaks caused by Salmonella , STEC, and L. monocytogenes. Data were collected by local, state, and federal investigators during the detection, investigation and response, and control phases of the outbreak investigations. Additional data sources used for this report included PulseNet, the national molecular subtyping network based on isolates uploaded by local, state, and federal laboratories, and the Foodborne Disease Outbreak Surveillance System (FDOSS), which collects information from state, local, and territorial health departments and federal agencies about single-state and multistate foodborne disease outbreaks in the United States. Multistate outbreaks reported to FDOSS were linked using a unique outbreak identifier to obtain food category information when a confirmed or suspected food source was identified. Food categories were determined and assigned in FDOSS according to a classification scheme developed by CDC, the Food and Drug Administration (FDA), and the U.S. Department of Agriculture Food Safety and Inspection Service (FSIS) in the Interagency Food Safety Analytics Collaboration. A possible multistate outbreak was determined by expert judgment to be an outbreak if supporting data (e.g., temporal, geographic, demographic, dietary, travel, or food history) suggested a common source. A solved outbreak was an outbreak for which a specific kind of food or animal was implicated (i.e., confirmed or suspected) as the source. Outbreak-level variables included number of illnesses, hospitalizations, cases of hemolytic uremic syndrome (HUS), and deaths; the number of states with illnesses; date of isolation for the earliest and last cases; demographic data describing patients associated with a possible outbreak (e.g., age, sex, and state of residence); the types of data collected ...

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Section: Discussionmentioning

confidence: 99%

Investigations of Possible Multistate Outbreaks of Salmonella, Shiga Toxin–Producing Escherichia coli, and Listeria monocytogenes Infections — United States, 2016

Marshall¹,

Nguyen²,

Ablan³

et al. 2020

MMWR Surveill. Summ.

View full text Add to dashboard Cite

show abstract

“…The mandatory application of good agricultural, hygienic, manufacturing and storage practices are essential in the control of the presence of L. monocytogenes on vegetables which are consumed raw (Kyere et al 2019).…”

Section: Colonization Of Plants By Listeria Monocytogenes (Egd-e Sv4b)mentioning

confidence: 99%

Microbial Quality of Irrigation Water in Serbia: Risks to Food Safety

Rudić¹,

Kljujev

Vujović

et al. 2019

Springer Water

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The human pathogen bacteria can colonize and contaminate fresh vegetables and fruits in any part of production chain. Water for irrigation is recognized as a potential source of pathogens that can cause foodborne illnesses. Water is a very effective vector of the transmission of human pathogen to plants, so microbiologically safe water has a unique role in a safe food production. Due to expected water scarcity, the availability of good-quality water for irrigation will be affected, and irrigated agriculture will be challenged. Therefore, a sufficient resource of quality water for irrigation is crucial for sustainable agricultural production. Generally, in Serbia, all surface water resources (canals and rivers) are polluted to some extent, which becomes obvious particularly during the growing season. Even the quality of shallow groundwater occasionally exhibits the levels of faecal indicator bacteria that exceed the limits proposed by international standards for irrigation water quality. The presence of Escherichia coli, E. coli O157:H7, L. monocytogenes, Salmonella spp. on different kind of fresh vegetables has been confirmed, using different methods, i.e. PCR, green fluorescent protein (Gfp) for transformation bacteria, fluorescence in situ hybridization (FISH) and confocal laser scanning microscopy (CLSM). This research shows the ability of the human pathogens to surface, and

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“…The contamination of lettuce by bacteria such as L. monocytogenes and fecal coliforms is a major issue, including the contamination of hydroponic systems where this pathogen is known to attach to leaves at a higher rate than in soil-based culture [ 24 , 25 , 26 ]. Lettuce is the most valuable leafy crop in the U.S. [ 27 ]; thus, contamination is a major concern in multiple aspects of the supply chain.…”

Section: Introductionmentioning

confidence: 99%

Planar Interdigitated Aptasensor for Flow-Through Detection of Listeria spp. in Hydroponic Lettuce Growth Media

Sidhu

Cavallaro

Pola

et al. 2020

Sensors

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Irrigation water is a primary source of fresh produce contamination by bacteria during the preharvest, particularly in hydroponic systems where the control of pests and pathogens is a major challenge. In this work, we demonstrate the development of a Listeria biosensor using platinum interdigitated microelectrodes (Pt-IME). The sensor is incorporated into a particle/sediment trap for the real-time analysis of irrigation water in a hydroponic lettuce system. We demonstrate the application of this system using a smartphone-based potentiostat for rapid on-site analysis of water quality. A detailed characterization of the electrochemical behavior was conducted in the presence/absence of DNA and Listeria spp., which was followed by calibration in various solutions with and without flow. In flow conditions (100 mL samples), the aptasensor had a sensitivity of 3.37 ± 0.21 kΩ log-CFU−1 mL, and the LOD was 48 ± 12 CFU mL−1 with a linear range of 102 to 104 CFU mL−1. In stagnant solution with no flow, the aptasensor performance was significantly improved in buffer, vegetable broth, and hydroponic media. Sensor hysteresis ranged from 2 to 16% after rinsing in a strong basic solution (direct reuse) and was insignificant after removing the aptamer via washing in Piranha solution (reuse after adsorption with fresh aptamer). This is the first demonstration of an aptasensor used to monitor microbial water quality for hydroponic lettuce in real time using a smartphone-based acquisition system for volumes that conform with the regulatory standards. The aptasensor demonstrated a recovery of 90% and may be reused a limited number of times with minor washing steps.

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Colonisation of lettuce by Listeria Monocytogenes

Cited by 24 publications

References 86 publications

Investigations of Possible Multistate Outbreaks of Salmonella, Shiga Toxin–Producing Escherichia coli, and Listeria monocytogenes Infections — United States, 2016

Investigations of Possible Multistate Outbreaks of Salmonella, Shiga Toxin–Producing Escherichia coli, and Listeria monocytogenes Infections — United States, 2016

Microbial Quality of Irrigation Water in Serbia: Risks to Food Safety

Planar Interdigitated Aptasensor for Flow-Through Detection of Listeria spp. in Hydroponic Lettuce Growth Media

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