Prevalence and seroepidemiology of Haemophilus parasuis in Sichuan province, China
- Published
- Accepted
- Subject Areas
- Microbiology, Veterinary Medicine, Epidemiology
- Keywords
- Haemophilus parasuis, Seroepidemiology, Serovar
- Copyright
- © 2017 Wang et al.
- Licence
- This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.
- Cite this article
- 2017. Prevalence and seroepidemiology of Haemophilus parasuis in Sichuan province, China. PeerJ Preprints 5:e2805v1 https://doi.org/10.7287/peerj.preprints.2805v1
Abstract
Haemophilus parasuis, the causative agent of Glässer’s disease, has been reported widely, but seldom is known about its epidemiology in Sichuan province, China. The objective was to reveal the prevalence and distribution of H.parasuis in the area. Widely sampling and isolation was performed initially and following serotyping multiplex PCR (serotyping-mPCR) combined with agar gel diffusion (GD) was subjected to these strains. From January 2014 to May 2016, 254 H.parasuis field strains were isolated from 576 pigs with clinical symptoms, for the frequence of 44.10%. Statistically significant differences of infection incidence were found in three age groups and seasons. Serovars 5(25.98%) and 4(23.62%) were the most prevalent and non-typeable isolates accounted for 7.87%. In geographical distribution, serovars 5 and 4 were prepotent in both major two parts of Sichuan province. The results confirmed the compound approach was dependable and revealed the diversity and distribution of serovars in Sichuan province, which was promising to know relevant vaccinal candidates and further prevention.
Author Comment
This is a submission to PeerJ for review.
Supplemental Information
H. parasuis infection incidence of different age groups in Sichuan province
*: A/B, A represents number of strains, and B represents number of samples.
H. parasuis infection incidence of different seasons in Sichuan province
*: A/B, A represents number of strains, and B represents number of samples.
H. parasuis infection incidence of the major two regions of Sichuan province
*: A/B, A represents number of strains, and B represents number of samples.
H. parasuis isolates for every cities (autonomous prefectures ) in Sichuan province
Cities in blue font belong to east Sichuan, and cities in red font belong to west Sichuan.