Risk factors for listeriosis due to sausage consumption in Mexico: consumer practices, bacterial survival, and quantitative microbial risk assessment.

Listeriosis is a foodborne disease caused by Listeria monocytogenes (Lm), which represents a public health problem. Lm has been identified as an important contaminating bacterium of ready-to-eat meat products (RTEM) in Mexico. The objective was to explore the risk factors for acquiring listeriosis due to sausage consumption by defining the consumer profile, evaluating the survival of Lm in sausage (5, 10, and 25 °C for 32 days) and performing a quantitative microbiological risk assessment.

Genetics and physiology of Salmonella houtenae isolated from a river in Mexico provides insight into the aquatic habitat influence on its adaptation and pathogenesis.

Salmonella enterica subsp. houtenae (IV) is a non-enteric subspecies of the genus Salmonella and has recently been implicated in extraintestinal diseases in humans. In Mexico, its reported that rivers are a reservoir of Salmonella houtenae, however, detailed information about the virulence and infective capacity of this bacterium are limited.

Pathogenic potential of non-typhoidal Salmonella serovars isolated from aquatic environments in Mexico.

Background: River water has been implicated as a source of non-typhoidal Salmonella (NTS) serovars in Mexico.

Objective: To dissect the molecular pathogenesis and defense strategies of seven NTS strains isolated from river water in Mexico.

Methods: The genome of Salmonella serovars Give, Pomona, Kedougou, Stanley, Oranienburg, Sandiego, and Muenchen were sequenced using the whole-genome shotgun methodology in the Illumina Miseq platform.

Effect of river water exposition on adhesion and invasion abilities of Salmonella Oranienburg and Saintpaul.

This study was performed to evaluate in vitro the adherence and invasiveness capacity of Salmonella Oranienburg and Saintpaul (isolated from river water) exposed to laboratory and river water growth conditions and inoculated into epithelial HEp-2 cell. Results showed that Salmonella Oranienburg and Salmonella Saintpaul showed lower ability to adhere and invade epithelial HEp-2 cells under both growth conditions as compared to Salmonella Typhimurium reference strain. S.

Draft Genome Sequences of 18 subsp. Serovar Oranienburg Strains Isolated from Rivers in Northwestern Mexico.

subsp. serovar Oranienburg is recognized as a foodborne pathogen widely distributed in the environment. Here, we report 18 draft genomes of  Oranienburg strains isolated from rivers in the northwestern region of Mexico.

Sanitizing alternatives for Escherichia coli and Salmonella typhimurium on bell peppers at household kitchens.

Fresh fruits and vegetables are known to play an important role as carriers of disease-causing organisms in household kitchens. The aims of this study were to assess and compare the effectiveness of sodium hypochlorite, organic acid-based and silver-based products to reduce Escherichia coli and Salmonella typhimurium inoculated on individual bell pepper pieces. Inoculated bell pepper pieces (n = 5) were submerged in sodium hypochlorite, organic acid-based and silver-based product solutions, at the concentration specified in the product label for sanitization of fruits and vegetables.