Evidence map›Paper›PMID 39957786›Full record

ArticleEnvironmental science & technology letters2025

Detection of Measles Virus Genotype A in a Non-Endemic Wastewater Setting: Insights from Measles Wastewater and Environmental Monitoring in Canada's Capital Region.

Emma Tomalty, Élisabeth Mercier, Lakshmi Pisharody, Tram Nguyen, Xin Tian, Md Pervez Kabir, Chandler Wong, Felix Addo, Nada Hegazy, Elizabeth Renouf and 3 more

Abstract read
In one paragraph

Article in Environmental science & technology letters, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
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

13 authors.

Emma TomaltyDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.ORCID https://orcid.org/0009-0007-4956-5546
Élisabeth MercierDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Lakshmi PisharodyDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Tram NguyenDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Xin TianDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Md Pervez KabirDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Chandler WongDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Felix AddoDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Nada HegazyDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.ORCID https://orcid.org/0000-0003-4277-076X
Elizabeth RenoufDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Dara Spatz FriedmanOttawa Public Health Epidemiology and Evidence Team, Ottawa Public Health, 100 Constellation Drive, Ottawa, Ontario K2G 6J8, Canada.
Shen WanDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.
Robert DelatollaDepartment of Civil Engineering, University of Ottawa, 800 King Edward Avenue, Ottawa, Ontario K1N 1A2, Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The recent global resurgence of measles in 2023-2024, despite vaccine preventability, underscores a critical public health issue, largely due to reduced vaccination coverage during the SARS-CoV-2 pandemic. In response, Ottawa Public Health intensified vaccination efforts in 2023 and 2024. Additionally, a research initiative began in April 2024 to monitor Ottawa wastewater for measles virus (MeV) using established wastewater and environmental surveillance (WES) protocols. Unexpected positive MeV detections through RT-qPCR in Ottawa wastewater-despite no active regional cases-prompted genotypic and retrospective analyses of archived RNA samples dating back to 2020. The genotypic analysis identified positive detection to belong to genotype A, the progenitor strain of the viral vaccines, marking the first report of MeV vaccine RNA in a large catchment area. Linear regression analysis revealed detections aligned with intensified vaccination efforts by Ottawa Public Health. These findings emphasize the importance of integrating genotypic analysis into WES practices to mitigate possible confounding factors, such as vaccine shedding into wastewater. Additionally, this research highlights potential public health applications using MeV WES as a complementary tool. Implementing the findings of this study for MeV WES, and for other re-emerging viruses, could improve public health response and resource allocation.

Identifiers

PMID39957786
PMCPMC11823443

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.