Evidence map›Paper›PMID 31801310›Full record

ArticlePoultry science2019

Characterization of emergent Avibacterium paragallinarum strains and the protection conferred by infectious coryza vaccines against them in China.

Yang Xu, Jinlong Cheng, Xiuying Huang, Meiyu Xu, Jinling Feng, Changqing Liu, Guozhong Zhang

Open access · hybridAbstract readRandomized Controlled Trial, Veterinary
In one paragraph

Article in Poultry science, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 16% 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

19 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Microorganisms · 2026
    Review
  4. Research progress onFrontiers in microbiology · 2026
    Review
  5. Molecular serotyping and virulence assessment ofFrontiers in veterinary science · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. The absence ofFrontiers in veterinary science · 2024
    Article
  11. Article
  12. Article
  13. Pathogenicity ofVaccines · 2022
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

7 authors at 1 institution in 1 country.

Yang XuKey Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Jinlong ChengKey Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Xiuying HuangBeijing Huadu Yukou Poultry Co., Ltd., Beijing 101206, People's Republic of China.
Meiyu XuDiagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China.
Jinling FengDiagnostic & Research Center of Livestock and Poultry Epidemic Diseases, China Agricultural University, Beijing 100193, People's Republic of China.
Changqing LiuBeijing Huadu Yukou Poultry Co., Ltd., Beijing 101206, People's Republic of China.
Guozhong ZhangKey Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
China Agricultural University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Infectious coryza (IC), an acute respiratory disease of chickens, is caused by Avibacterium paragallinarum. Here, the current epidemiological status of IC was investigated in China over 5 yr (2013 to 2018). A total of 28 Av. paragallinarum field isolates were identified by PCR tests and by sequence analysis of the hemagglutinin gene. The pathogenicities of 4 field isolates, the efficacy of 2 commercial inactivated oil-emulsion IC vaccines and vaccines containing different Av. paragallinarum isolates were also evaluated. The PCRs revealed a high rate (51.5%) of sample positivity for Av. paragallinarum during 2013 to 2018. Phylogenetic analysis showed that most field strains fell into the same cluster and had a farther genetic relationship with the early isolates from China. Pathogenicity testing revealed that the Chinese Av. paragallinarum isolates were able to induce the typical clinical signs of IC; hence, they were clearly pathogenic to chickens. Vaccine efficacy tests revealed that the 2 commercial inactivated oil-emulsion IC vaccines we tested had low protection rates against 2 selected Av. paragallinarum isolates after a single immunization, whereas the inactivated vaccine containing the Av. paragallinarum BJ26 isolate generated a relatively high protection rate against the field isolates compared with other three tested vaccines. The results indicate that IC is currently prevalent in China, and that commercial vaccines have not counteracted its presence in this country.

Indexed as

ChickensAnimalsBacterial VaccinesChinaHaemophilus InfectionsHaemophilus paragallinarumPasteurellaceae InfectionsPoultry DiseasesBacterial VaccinesAvibacterium paragallinarumhemagglutinin antigen geneinfectious coryzapathogenicityvaccine

Identifiers

PMID31801310
PMCPMC8913951
OpenAlexW2989787678

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.