Abstract

MATA, Estefanía Espinosa et al. Detection and genotyping of Listeria monocytogenes in artisanal soft cheeses from Ecuador. Rev. argent. microbiol. [online]. 2022, vol.54, n.1, pp.101-110. ISSN 0325-7541.  http://dx.doi.org/10.1016/j.ram.2021.02.013.

Listeria monocytogenes is one of the most important bacteria associated with food-borne diseases, soft cheese being an important L. monocytogenes vehicle. In Ecuador, softcheese is consumed in 84.3% of urban households. We determined the prevalence of L. mono-cytogenes and serogroups in 260 fresh artisanal soft cheese samples collected in 18 of 24Ecuadorian provinces. Listeria spp. detection was carried out by culture-dependent and inde-pendent methods; 14.23% of samples were positive for L. monocytogenes. Serogroup IVb wasfound in 83.78% of the food isolates. Serogroups IIb and IIa were present in 8.11% of our isolates.To our knowledge, this is the first report of L. monocytogenes serogroups associated with foodin Ecuador; we also found serogroup similarities between cheese isolates and clinical isolates.

Keywords : Listeriamonocytogenes;Artisanal soft heese; Serogroup;Listeriosis;Foodborne.

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