Comparative genome analysis of multidrug-resistant and susceptible Glaesserella parasuis strains isolated from diseased pigs in China

Wan, Xiulin; Wang, Guoxia; Gao, Wenxuan; Li, Chunling; He, Yan

doi:10.1016/j.vetmic.2021.109002

Cited by 2 publications

(2 citation statements)

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“…Although the most important control measures against Gps-related disease is antibiotic treatment, frequencies of resistant isolates decreased by time in this evaluation. This is in contrast to other regions, where multidrug-resistant Gps are relevant in swine production [ 31 ]. In Gps from nasal swabs of healthy pigs in China, elevated MICs with bimodal distribution were found for several antibiotic substances, suggesting the presence of non-wildtype strains [ 4 ].…”

Section: Discussionmentioning

confidence: 84%

“…As in the study of [ 6 ], serotype 4 and 13 were found most frequently. Serotype 4 is also the most prevalent serotype in China in pigs suffering from Glässer’s disease [ 31 ], while in nasal swabs of healthy pigs most frequently serotype 7 (20%) and 3 (15%) were detected [ 32 ]. In a recent study concerning the distribution of Gps serotypes in different regions of the world, serotype 5/12 was the most common sort in Canada, China and Vietnam (22–31%) and the second most common sort in Europe (14%) behind serotype 4 (17%) [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

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Temporal Patterns of Phenotypic Antimicrobial Resistance and Coinfecting Pathogens in Glaesserella parasuis Strains Isolated from Diseased Swine in Germany from 2006 to 2021

et al. 2022

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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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Section: Discussionmentioning

confidence: 84%