Leptospirosis seroprevalence in Canadian beef calves at or near fall weaning.

Colleen M Pollock, John R Campbell, M Claire Windeyer, Marjolaine Rousseau, Cheryl L Waldner

Abstract read

In one paragraph

Article in The Canadian veterinary journal = La revue veterinaire canadienne, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Colleen M PollockDepartment of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Pollock, Campbell, Waldner); Faculty of Veterinary Medicine, University of Calgary, 11877 85 Street NW, Calgary, Alberta T3R 1J3 (Windeyer); Département de sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2 (Rousseau).

John R CampbellDepartment of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Pollock, Campbell, Waldner); Faculty of Veterinary Medicine, University of Calgary, 11877 85 Street NW, Calgary, Alberta T3R 1J3 (Windeyer); Département de sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2 (Rousseau).

M Claire WindeyerDepartment of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Pollock, Campbell, Waldner); Faculty of Veterinary Medicine, University of Calgary, 11877 85 Street NW, Calgary, Alberta T3R 1J3 (Windeyer); Département de sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2 (Rousseau).

Marjolaine RousseauDepartment of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Pollock, Campbell, Waldner); Faculty of Veterinary Medicine, University of Calgary, 11877 85 Street NW, Calgary, Alberta T3R 1J3 (Windeyer); Département de sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2 (Rousseau).

Cheryl L WaldnerDepartment of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan S7N 5B4 (Pollock, Campbell, Waldner); Faculty of Veterinary Medicine, University of Calgary, 11877 85 Street NW, Calgary, Alberta T3R 1J3 (Windeyer); Département de sciences cliniques, Faculté de médecine vétérinaire, Université de Montréal, 3200 Rue Sicotte, Saint-Hyacinthe, Quebec J2S 2M2 (Rousseau).

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: Our objective was to estimate the seroprevalences of 6 Animals: Serum was collected from 1922 beef calves from 106 herds in the Canadian Cow-Calf Surveillance Network (C3SN). Procedure: A microscopic agglutination test was used to measure antibody titers for serovars Bratislava, Canicola, Grippotyphosa, Hardjo, Icterohaemorrhagiae, and Pomona. Records of Results: Overall, 90.8% of sampled calves had undetectable (< 50) antibody titers to all tested serovars, whereas 3.2% of sampled calves from 26.4% of participating herds had a positive (≥ 100) titer to 1 or more serovars. The seroprevalences at both the calf and herd levels were higher for the host-adapted serovar Hardjo in western Canada and higher for the non-host-adapted serovars in eastern Canada. The probability of calf serovar Icterohaemorrhagiae titer increasing by 1 doubling dilution was 3.6× (95% CI: 1.7, 7.7) higher in herds that administered 2 doses of Conclusion and clinical relevance: Based on the serological evidence, few weaning-age beef calves across Canada have been exposed to pathogenic

Indexed as

Cattle DiseasesLeptospiraLeptospirosisAnimalsAntibodies, BacterialBacterial VaccinesCanadaCattleFemaleMaleSeroepidemiologic StudiesSerogroupVaccinationWeaningAntibodies, BacterialBacterial Vaccines

Identifiers

PMID40927258

PMCPMC12416108

What OpenQuestion holds

Textmetadata

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.