ArticleBMC veterinary research2015
Serological profile, seroprevalence and risk factors related to Lawsonia intracellularis infection in swine herds from Minas Gerais State, Brazil.
Article in BMC veterinary research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 31 citations in OpenAlex.
- Design and functional characterization of recombinant chimeras as vaccine candidates against Lawsonia intracellularis.Biotechnology letters · 2026Article
- Porcine proliferative enteropathy: overview of disease dynamics and non-antibiotic alternatives for prevention and control strategies.Frontiers in veterinary science · 2025Review
- Subsistence swine farming: seroprevalence and risk factors associated with Lawsonia intracellularis infection in the state of Minas Gerais Brazil in 2016.Tropical animal health and production · 2023Article
- Development and validation of a flow cytometry antibody test forFrontiers in immunology · 2023Article
- Prevalence and associated risk factors forFrontiers in veterinary science · 2023Article
- Microbiota of vaccinated and non-vaccinated clinically inconspicuous and conspicuous piglets under naturalFrontiers in veterinary science · 2022Article
- Review of methods for the detection ofJournal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc · 2021Review
- Correlation of Lawsonia intracellularis positivity in quantitative PCR and herd factors in European pig herds.Porcine health management · 2021Article
- Evaluation of swine enteroids as in vitro models for Lawsonia intracellularis infection1,2.Journal of animal science · 2020Article
- Arsenic disturbs the gut microbiome of individuals in a disadvantaged community in Nepal.Heliyon · 2020Article
- Isolation and in vitro antimicrobial susceptibility of porcine Lawsonia intracellularis from Brazil and Thailand.BMC microbiology · 2019Article
- Prevalence ofPorcine health management · 2019Article
- Factors associated with the growing-finishing performances of swine herds: an exploratory study on serological and herd level indicators.Porcine health management · 2018Article
- Systemic cytokine response in pigs infected orally with a Lawsonia intracellularis isolate of South Korean origin.The Journal of veterinary medical science · 2018Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundLawsonia intracellularis is the etiologic agent of proliferative enteropathy, which causes diarrhea in several animal species, including swine. Serology can be used both to determine the prevalence of antibodies against a specific pathogen in a herd and to obtain the serological profile, which is used to determine the dynamics of infection in the herd. The objective of this study was to determine the serological profile and seroprevalence of anti-L. intracellularis antibodies in swine herds from intensive production regions of Minas Gerais, Brazil, and to identify the risk factors related to the herd-level seropositivity.
resultsA total of 2999 serum samples were collected for this cross-sectional study in the four major regions of intensive swine production in Minas Gerais, Brazil. To obtain better estimates and increase the external validity of the seroprevalence, the sample data were weighted based on the pig population of each herd, the stratum in which the herd was classified and the swine population of the region where each herd was located. A questionnaire was used to identify potential risk factors related to this herd-level seropositivity. The overall weighted prevalence in Minas Gerais was 34.7% (95% confidence interval: 32.12 - 37.20%), and there was no significant difference among the sampled regions, with the seroprevalence rates ranging between 32.06 and 37.66%. Finishing pigs were the most prevalent among the sampled categories. Among the evaluated risk factors, "cleaning before disinfecting" had a negative impact in the seroprevalence (p < 0.05) and was considered a protective factor.
conclusionsThe anti-L. intracellularis antibodies were detected in all of the investigated herds in Minas Gerais, which indicated a wide distribution of the agent in the state. The predominant serological profile was consistent with the dynamics of infection previously observed in pig herds in other countries with similar antimicrobial usage, in which the nursery pigs usually show the lowest seroprevalence and the finishing pigs exhibit the highest. Herds that adopt the practice of "cleaning before disinfection" can decrease their L. intracellularis antibody seropositivity.
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