Cited by 75Milk Quality and Mastitis in Dairy CowsEscherichia coli research studiesAnimal health and immunology

The DOI matches its Crossref record; 14 of the 15 references it cites were found in a registry or an index; 9 of the 29 sources its claims cite were checked for support.

Effects of an Escherichia coli J5 Vaccine on Mild Clinical Coliform Mastitis

Open access

Abstract

Vaccination with the J5 bacterin reduced duration of IMI and local signs of clinical mastitis in cows challenged by intramammary infusion with a smooth heterologous strain of E. coli previously shown to cause mild clinical mastitis.

Overview

Integrity signals

Registry

Crossref · 10.3168/jds.s0022-0302(95)76636-x

Cites

14 of 14 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

9 of 29 cited sources checked · 6 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    Vaccination of cows with Escherichia coli (O111:B4) J5 bacterins during the dry period and at calving reduced the incidence of naturally occurring clinical coliform mastitis during early lactation.

    “Vaccination of cows with Escherichia coli (0111:B4) J5 bacterins during the dry period and at calving reduced the incidence of naturally occurring clinical coliform mastitis during early lactation (2, 5).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [2] Gonzales, 1983, Prevention of clinical coliform mastitis in dairy cows by a mutant Escherichia coli vaccine, Can. J. Vet. Res.

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites [5] Hogan, 1992, Field trial to determine efficacy of an Escherichia coli J5 mastitis vaccine, J. Dairy Sci. source
  • Premisecitation

    Gram-negative bacteria isolated from naturally occurring IMI differ in pathogenicity and virulence to the mammary gland.

    “Gram-negative bacteria isolated from naturally occumng IMI differ in pathogenicity and virulence to the mammary gland (3,10).”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites [3] Hill, 1981, Factors influencing the outcome of Escherichia coli mastitis in the dairy cow, Res. Vet. Sci. source
    • cites [10] Todhunter, 1990, Intramammary challenge of the bovine mammary gland with coliform bacteria during early involution, J. Dairy Sci. source

      The Challenge Bacteria section says the strains were isolated from naturally occurring IMI. The Discussion reports that these strains differed in their ability to establish experimental infections, but the tests were confined to mammary glands during early involution. The claim does not retain that condition and describes the difference broadly as pathogenicity and virulence to the mammary gland; page numbers were not available in our copy. (LLM, conf=0.84)

      Experimental — accuracy not yet measured
  • Findingcitation

    The intramammary challenge model using E. coli 727 has consistently produced mild clinical coliform mastitis in the current and two previous trials.

    “The intramammary challenge model using E. coli 727 has consistently produced mild clinical coliform mastitis in the current and two previous trials (6, 11).”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [6] Hogan, 1994, Therapy of experimentally induced coliform mastitis with a Propionibacterium acnes product, J. Dairy Sci. source

      The Bacterial Challenge section identifies E. coli 727 as the intramammary challenge strain, and the Results state that all challenged cows developed clinical mastitis. The passages do not characterize the disease as mild or establish that this model produced mild mastitis consistently across two previous trials. Page numbers were not available in our copy. (LLM, conf=0.83)

      Experimental — accuracy not yet measured
    • cites [11] Todhunter, 1991, Intramammary challenge with Escherichia coli following immunization with a curli-producing Escherichia coli, J. Dairy Sci. source

      The Bacterial Challenge and Results sections (page unavailable) show that intramammary challenge with E. coli 727 caused clinical mastitis in every cow, with all cows appearing normal after 48 hours. The paper describes the infections as acute and short-lived, rather than explicitly mild, and does not establish that this outcome occurred consistently across the current and two previous trials. (LLM, conf=0.86)

      Experimental — accuracy not yet measured
  • Premisecitation

    Intramammary challenge with E. coli 487 consistently caused more severe clinical signs of mastitis than did intramammary challenge with E. coli 727.

    “Intramarnmary challenge with E. coli 487 (7) consistently caused more severe clinical signs of mastitis than did intramammary challenge with E. coli 727 (6, 11).”
    Quote in the paperNot a substantial claim2 of 3 sources checked
    • cites [7] Hogan, 1992, Efficacy of an Escherichia coli J5 vaccine in an experimental challenge trial, J. Dairy Sci. source
    • cites [6] Hogan, 1994, Therapy of experimentally induced coliform mastitis with a Propionibacterium acnes product, J. Dairy Sci. source
    • cites [11] Todhunter, 1991, Intramammary challenge with Escherichia coli following immunization with a curli-producing Escherichia coli, J. Dairy Sci. source
  • Findingown data

    BSA returned to prechallenge concentrations on d 3 and 4 for both cows vaccinated with J5 bacterin and cows vaccinated with placebo.

    “The BSA returned to prechallenge concentrations on d 3 and 4 for cows vaccinated with J5 bacterin and cows vaccinated with placebo.”
    Quote in the paperNot a substantial claim
  • It may state two separate claims as one. 9
  • Probably not a substantial claim. 4
  • It may state two separate claims as one.

    Premisecitation

    Use of an E. coli J5 bacterin did not reduce incidence of IMI at calving, but immunization reduced the percentage of mammary quarters with Gram-negative bacterial IMI that displayed clinical signs.

    “The use of an E. coli J5 bacterin did not reduce incidence of IMI at calving, but immunization reduced the percentage of mammary quarters with Gram-negative bacterial IMI that displayed clinical signs (5).”
    Quote in the paperSubstantial claim1 of 1 sources checked
    • cites [5] Hogan, 1992, Field trial to determine efficacy of an Escherichia coli J5 mastitis vaccine, J. Dairy Sci. source
  • It may state two separate claims as one.

    Premisecitation

    Although local signs of clinical mastitis were reduced by vaccination with E. coli J5 in the current trial, the use of a Propionibacterium acnes immunostimulant and vaccination with a curli-producing strain of E. coli did not alter the dynamics of IMI and clinical signs following intramammary infusion of E. coli 727.

    “Although local signs of clinical mastitis were reduced by vaccination with E. coli J5 in the current trial, the use of a Propionibacterium acnes immunostimulant (6) and vaccination with a curli-producing strain of E. coli (11) did not alter the dynamics of IMI and clinical signs following intramammary infusion of E. coli 727.”
    Quote in the paperSubstantial claim2 of 2 sources checked
    • cites [6] Hogan, 1994, Therapy of experimentally induced coliform mastitis with a Propionibacterium acnes product, J. Dairy Sci. source
    • cites [11] Todhunter, 1991, Intramammary challenge with Escherichia coli following immunization with a curli-producing Escherichia coli, J. Dairy Sci. source
  • It may state two separate claims as one.

    Findingown data

    BSA concentrations at 7 d postchallenge were greater than prior to challenge in controls but not in J5 vaccinates (P < .05).

    “Concentrations of BSA in whey were greater at 7 d postchallenge than prior to challenge in controls but not J5 vaccinates (P < .05).”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Findingown data

    Whey BSA concentrations increased in challenged quarters of all cows by d 1 postchallenge and were greater for control cows than for cows vaccinated with J5 (P < .05).

    “Whey concentrations of BSA (Figure 1) increased in challenged quarters of all cows by d 1 postchallenge and were greater for control cows than for cows vaccinated with J5 (P < .05).”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Findingown data

    Mean peak rectal temperatures did not differ between treatments and occurred at 12 h postchallenge in both experimental groups.

    “Mean peak rectal temperatures (Figure 4) did not differ between treatments and occurred at 12 h postchallenge in both experimental groups.”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Findingown data

    Ninety percent of control cows had a clinical score of 4 at 24 h postchallenge compared with 31.6% of cows vaccinated with J5.

    “Ninety percent of control cows had a clinical score of 4 at 24 h postchallenge compared with 31.6% of cows vaccinated with”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Findingown data

    Vaccination with the J5 bacterin did not reduce the rate of bacterial growth or peak number of colony-forming units per milliliter of milk.

    “Vaccination with the J5 bacterin did not reduce the rate of bacterial growth or peak number of colony-forming units per milliliter of milk (Figure 3).”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Interpretationreasoning

    Vaccination apparently enhanced host defenses, and bacteria were eliminated from mammary glands without clinical signs being detected.

    “Vaccination apparently enhanced host defenses, and bacteria were eliminated from mammary glands without clinical signs being detected.”
    Quote in the paperSubstantial claim
  • It may state two separate claims as one.

    Interpretationown data

    The protection afforded by the E. coli J5 bacterin was again demonstrated to reduce severity and duration of clinical signs of mastitis.

    “Although the model used in the current trial appeared to reflect more accurately the dynamics of naturally occurring coliform IMI and clinical mastitis than the challenge models previously reported (4, 7), the protection afforded by the E. coli J5 bacterin was again demonstrated to reduce severity and duration of clinical signs of mastitis.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [4] Hill, 1991, Vaccination of cows with rough Escherichia coli mutants fails to protect against experimental intramammary bacterial challenge, Vet. Res. Commun. source
    • cites [7] Hogan, 1992, Efficacy of an Escherichia coli J5 vaccine in an experimental challenge trial, J. Dairy Sci. source
  • Probably not a substantial claim.

    Study design and conductnone given

    Treatment codes were not broken until data collection and analyses were completed.

    “The treatment codes were not broken until data collection and analyses were completed.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim.

    Study design and conductown data

    Vaccine and placebo were administered in a blinded manner.

    “Vaccine and placebo were provided to and administered by the investigators in a blinded manner.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim. The paper’s conclusions may not depend on it.

    Study design and conductnone given

    Cows within a block were challenged on the same day.

    “Cows within a block were challenged on the same day.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim.

    Study design and conductnone given

    Only uninfected quarters were infused.

    “Infusions were 4 h after morning milking, and only uninfected quarters were infused.”
    Quote in the paperSubstantial claim
13 of 13

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Titers responsive to immunization were negatively correlated with severity of clinical signs of mastitis following intramammary challenge.

    “Titers responsive to immunization were negatively correlated with severity of clinical signs of mastitis following intramammary challenge [33].”

    From Coliform mastitis (2003) · cites this paper as [33]

    The Results and Discussion report that cows vaccinated with J5 had less severe local clinical signs after intramammary challenge than placebo-treated cows. The Statistical Analyses section lists comparisons of treatment groups, but our copy does not report immunization-responsive titers or a correlation between titers and clinical severity. The claim's titer-specific relationship is therefore unsupported. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Vaccination reduced the peak bacterial counts in infected quarters, duration of intramammary infections by 25%, and duration of clinical signs of mastitis by 50% compared with unvaccinated cows.

    “Vaccination reduced the peak bacterial counts in infected quarters, duration of intramammary infections by 25%, and duration of clinical signs of mastitis by 50% compared with unvaccinated cows [33].”

    From Coliform mastitis (2003) · cites this paper as [33]

    The Results and Discussion report shorter intramammary infections and local clinical signs in J5-vaccinated cows, but the reported durations imply about a 39% reduction in infection duration (129.8 versus 79.6 hours), not 25%, and about a 44% reduction in the measured period of severe local signs (31.6 versus 17.7 hours). The J5 section explicitly says vaccination did not reduce peak bacterial counts. The copy provides no page numbers for these passages. (LLM, conf=0.92)

    Experimental — accuracy not yet measured

Citations

Cites

Flagged first, then by citations

1 of the 15 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. SAS® User's Guide: Statistics, Version 5 Edition. 1985. SAS Inst., Inc., Cary, NC.

Cited by

Sorted by citations

Metadata

Authors
Hogan, J. S., Weiss, W. P., Smith, K. L., Todhunter, D. A., Schoenberger, P. S., & Sordillo, L. M.
Affiliations
  • Pennsylvania State University (US)
  • The Ohio State University (US)
Venue
Journal of Dairy Science
Published
1995-02
Volume
78
Issue
2
Pages
285-290
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2161831645
Cited by
75
References
15
Citations by year
2025: 1 · 2023: 3 · 2022: 2 · 2021: 4 · 2020: 5 · 2019: 3 · 2017: 2 · 2016: 2 · 2014: 3 · 2013: 8 · 2012: 7
FWCI
4.36
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ohio State University
Topics
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Milk Quality and Mastitis in Dairy Cows
  • Life Sciences › Immunology and Microbiology › Microbiology › Escherichia coli research studies
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal health and immunology
Keywords
coliform mastitis, bovine mastitis, heterologous strains, bacterin, somatic cell count, milk bacterial count, dairy cattle, vaccine efficacy
MeSH terms
Administration, Topical, Analysis of Variance, Animals, Bacterial Vaccines, Body Temperature, Cattle, Escherichia coli, Escherichia coli Infections, Female, Mastitis, Bovine

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

A language model drew the claims from the paper on 2026-10-11, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).

A second model labelled each claim on 2026-10-11 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).

Cited sources are checked with a language model’s help (gpt-6-sol).

Statistics and arithmetic are recomputed, not judged.

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