Temporal patterns of phenotypic antimicrobial resistance and coinfecting pathogens in Glaesserella parasuis strains isolated from diseased swine in Germany from 2006 to 2021
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Glaesserella parasuis (Gps) causes high economic losses in pig farms worldwide. So far no vaccine provides cross-protection for different serotypes, so antibiotic treatment is widely used to cope with this pathogen. In this study, routine diagnostic data from 2046 pigs with Gps related diseases sent for necropsy to a German laboratory in the time period 2006–2021 were analysed retrospectively. In the time period 2018–2021, the most frequent serotypes (ST) detected were ST4 (30%) and ST13 (22%). A comparison of the reference period 2006–2013 prior to obligatory routine recording of antimicrobial usage in livestock with the period 2014–2021 resulted in a statistically significant decrease of frequencies of resistant Gps isolates for ceftiofur, enrofloxacin, erythromycin, spectinomycin, tiamulin and tilmicosin. While in 2006–2013 all isolates were resistant for tetracyclin and cephalothin, frequencies of resistant isolates decreased in the second time period to 28% and 62%, respectively. Parallel to the reduction of antimicrobial usage, during recent years a reduction in resistant Gps isolates has been observed, so only a low risk of treatment failure exists. Most frequently, pigs positive for Gps were also positive for S.suis (25.4%), PRRSV-EU (25.1%) and influenza virus (23%). The viral pathogens may act as potential trigger factors.
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The obtained MIC50 values in this current study were slightly lower for several antibiotics than those in a study on 2,046 G. parasuis isolates recovered in Germany from 2006 to 2021.
“The obtained MIC50 values in this current study were slightly lower for several antibiotics than those in a study on 2,046 G. parasuis isolates recovered in Germany from 2006 to 2021 (Wiencek et al., 2022).”
From Pan-European analysis shows stable, low antimicrobial resistance in most bovine and porcine respiratory tract pathogens (2026) · cites this paper as Wiencek et al., 2022
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Bacterial topography of the healthy human lower respiratory tract
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de Jong, A., Temmerman, R., Rose, M., Simjee, S., El Garch, F., & on behalf of the VetPath Study Group (2026) · Frontiers in Microbiology · doi:10.3389/fmicb.2026.1745115 · Cited by 3 · see citing works
- Authors
- Wiencek, I., Hartmann, M., Merkel, J., Trittmacher, S., Kreienbrock, L., & Hennig-Pauka, I.
- Affiliations
- University of Veterinary Medicine Hannover, Foundation (DE)
- Field Station for Epidemiology, University of Veterinary Medicine Hannover, 49456 Bakum, Germany
- Venue
- Pathogens
- Publisher
- MDPI AG
- Published
- 2022-06-24
- Volume
- 11
- Issue
- 7
- Pages
- 721
- ISSN
- 2076-0817 (ISSN-L)
- PMC
- PMC9316560
- OpenAlex
- W4283590914
- Cited by
- 9
- References
- 1
- Citations by year
- 2026: 4 · 2025: 3 · 2023: 2
- FWCI
- 1.38
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Pathogens (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) (491094227)
- Topics
- Health Sciences › Veterinary › Small Animals › Veterinary medicine and infectious diseases
- Life Sciences › Immunology and Microbiology › Microbiology › Microbial infections and disease research
- Life Sciences › Immunology and Microbiology › Applied Microbiology and Biotechnology › Antibiotic Use and Resistance
- Keywords
- Haemophilus parasuis, antimicrobial resistance, pigs, serotypes, co-infection, porcine circovirus type 2, porcine reproductive and respiratory syndrome virus, influenza virus, ceftiofur, enrofloxacin, erythromycin, tetracycline, tiamulin, tilmicosin, antimicrobial use, temporal trends
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