Evidence map›Paper›PMID 23175289›Full record

ArticleClinical and vaccine immunology : CVI2013

On the efficacy and safety of vaccination with live tachyzoites of Neospora caninum for prevention of neospora-associated fetal loss in cattle.

Fred H Weber, James A Jackson, Brian Sobecki, Les Choromanski, Mary Olsen, Todd Meinert, Rodney Frank, Michael P Reichel, John T Ellis

Open access · diamondAbstract read
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
3.8field-weighted citation impact, top 6% 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

14 citing papers in PubMed, 57 citations in OpenAlex.

  1. Microorganisms · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. AVaccines · 2021
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Canine neosporosis: perspectives on pathogenesis and management.Veterinary medicine (Auckland, N.Z.) · 2016
    Review
  13. Article
  14. Neospora caninum and Wildlife.ISRN parasitology · 2013
    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

9 authors at 2 institutions in 2 countries.

Fred H WeberPfizer Animal Health, Veterinary Medicine Research and Development, Kalamazoo, MI, USA. fred.h.weber@pfizer.com
James A Jackson
Brian Sobecki
Les Choromanski
Mary Olsen
Todd Meinert
Rodney Frank
Michael P Reichel
John T Ellis
Pfizer (United States) · USUniversity of Technology Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Infection of cattle with Neospora caninum may result in abortion or the birth of a congenitally infected calf. Vaccination with live N. caninum protects against experimental infection of cattle and mice, and the naturally attenuated Nc-Nowra strain of N. caninum is of particular interest as a potential vaccine candidate. Vaccination of heifers prior to breeding with live Nc-Nowra tachyzoites by either the subcutaneous or the intravenous route reduced the rate of abortion and the presence of the parasite in calves as determined by PCR and serology after infection of cows with a virulent isolate. Protected fractions were 55.6% to 85.2% depending on the route of vaccination and growth conditions of the vaccine strain, with cryopreserved Nc-Nowra tachyzoites being less effective, with a 25.9% protected fraction. Vaccination appeared to reduce the rate of pregnancy after artificial insemination in some groups compared to nonvaccinated, nonchallenged controls. One animal that was vaccinated but not challenged experienced an abortion, but Nc-Nowra could not be detected in any of the cows in this group or their progeny. This study confirms that live vaccination can be an effective method of preventing neosporosis in cattle and yet highlights the technical hurdle of preservation of live parasites that must be overcome for a vaccine to be commercially successful.

Indexed as

AnimalsCattleCattle DiseasesCoccidiosisFemaleFetal DiseasesInjections, IntravenousInjections, SubcutaneousNeosporaPregnancyProtozoan VaccinesVaccinationProtozoan Vaccines

Identifiers

PMID23175289
PMCPMC3535767
OpenAlexW2152350967

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.