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.