Evidence map›Paper›PMID 31310227›Full record

ArticleEmerging infectious diseases2019

Multistate Outbreak of Listeriosis Associated with Packaged Leafy Green Salads, United States and Canada, 2015-2016.

Julie L Self, Amanda Conrad, Steven Stroika, Alikeh Jackson, Laura Whitlock, Kelly A Jackson, Jennifer Beal, Allison Wellman, Marianne K Fatica, Sally Bidol and 8 more

Open access · diamondAbstract read
In one paragraph

Article in Emerging infectious diseases, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
7.4field-weighted citation impact, top 2% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 85 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Microorganisms · 2025
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  5. Microbiology spectrum · 2025
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  6. Article
  7. Foods (Basel, Switzerland) · 2025
    Review
  8. Article
  9. Article
  10. AssessingMicroorganisms · 2024
    Article
  11. Article
  12. Article
  13. Impact of High-Pressure Processing (HPP) onFoods (Basel, Switzerland) · 2023
    Review
  14. Review
  15. Article
  16. Article
  17. Human Listeriosis.Clinical microbiology reviews · 2023
    Review
  18. Review
  19. Molecular investigation of ready-to-eat salads forFood and waterborne parasitology · 2023
    Article
  20. Listeria monocytogenes Illness and Deaths Associated With Ongoing Contamination of a Multiregional Brand of Ice Cream Products, United States, 2010-2015.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2023
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

18 authors at 5 institutions in 2 countries.

Julie L Self
Amanda Conrad
Steven Stroika
Alikeh Jackson
Laura Whitlock
Kelly A Jackson
Jennifer Beal
Allison Wellman
Marianne K Fatica
Sally Bidol
Paula Pennell Huth
Meghan Hamel
Kristyn Franklin
Lorelee Tschetter
Christine Kopko
Penelope Kirsch
Matthew E Wise
Colin Basler
New York State Department of Health · USCenters for Disease Control and Prevention · USMichigan Department of Health and Human Services · USPublic Health Agency of Canada · CAUnited States Food and Drug Administration · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated an outbreak of listeriosis detected by whole-genome multilocus sequence typing and associated with packaged leafy green salads. Nineteen cases were identified in the United States during July 5, 2015-January 31, 2016; isolates from case-patients were closely related (median difference 3 alleles, range 0-16 alleles). Of 16 case-patients interviewed, all reported salad consumption. Of 9 case-patients who recalled brand information, all reported brands processed at a common US facility. The Public Health Agency of Canada simultaneously investigated 14 cases of listeriosis associated with this outbreak. Isolates from the processing facility, packaged leafy green salads, and 9 case-patients from Canada were closely related to US clinical isolates (median difference 3 alleles, range 0-16 alleles). This investigation led to a recall of packaged leafy green salads made at the processing facility. Additional research is needed to identify best practices and effective policies to reduce the likelihood of Listeria monocytogenes contamination of fresh produce.

Indexed as

Disease OutbreaksFood MicrobiologyListeriaAdolescentAdultAgedAged, 80 and overCanadaChildChild, PreschoolDisease NotificationFemaleFoodborne DiseasesGenome, BacterialGeography, MedicalHumansbacteriaCanadafoodborne infectionsfood safetylettuceListeria monocytogeneslisteriosisoutbreakpackaged leafy green saladsproduceUnited States

Identifiers

PMID31310227
PMCPMC6649349
OpenAlexW2959493645

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.