We are studying M. hyopneumoniae, M. hyorhinis and M. hyosynoviae. We perform genomic research and develop novel genotyping methods (Földi et al., 2020). We determine the antibiotic susceptibility profiles (MIC) of isolates, identify the genetic markers of resistance (Felde et al., 2018) and develop rapid and cost-effective assays for their detection (Felde et al., 2020). In collaboration with pharmaceutical companies we participate in vaccine development projects.