ArticleMicrobiologyOpen2025
Profiling Listeria monocytogenes in Hummus, Fresh Produce, and Food Processing Environments in the Western Cape, South Africa.
Article in MicrobiologyOpen, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Genetic characterization ofFrontiers in microbiology · 2026Article
- Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
3 authors.
Funding
Abstract
Listeria monocytogenes is pervasive in agricultural environments and difficult to eradicate from food-processing facilities. Consequently, various foods become contaminated, posing health risks to immunocompromised individuals. This surveillance study aimed to enhance the understanding of the genetic diversity, virulence, plasmid content, sanitizer tolerance, and antibiotic resistance of L. monocytogenes from ready-to-eat (RTE) hummus, fresh produce and food-processing environments in the Western Cape, South Africa (2018-2021). Sixty L. monocytogenes isolates were classified as lineage I or lineage II using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Lineage I was notably prevalent overall (57%; n = 34) and significantly associated with fresh produce (88%; n = 7) (p = 0.04). Whole-genome sequencing (WGS) and bioinformatic analysis characterized a subset of 20 L. monocytogenes isolates into seven sequence types (STs) (ST1, ST2, ST3, ST5, ST101, ST121, ST204), and three serotypes (1/2a, 1/2b, 4b). ST204 (38%; n = 3) was most prevalent in the food-processing environment, ST5 (50%; n = 3) in fresh produce, and ST5 (33%; n = 2), ST101 (33%; n = 2) and ST121 (33%; n = 2), in RTE hummus. However, no single serotype or ST was significantly overrepresented in any category (p > 0.05). All isolates carried both Listeria pathogenicity island (LIPI)-1 and LIPI-2 gene clusters. Two isolates (ST1 and ST3) contained all genes comprising LIPI-3. Two ST5 isolates from RTE hummus contained the tetM gene. Isolates from different origins contained the emrC, bcrABC or qacH genes conferring tolerance to benzalkonium chloride, a quaternary ammonium compound class of sanitizer. RTE hummus, fresh produce and the food-processing environment are susceptible to contamination by diverse and virulent L. monocytogenes strains.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.