Recombination, mobile genetic elements, and genetic transfer contribute to the adaptation of Streptococcus uberis causing mastitis
Whole-genome analysis of 138 S. uberis isolates from three Thai dairy herds identified 42 core-genome sequence types and abundant mobile elements. The herd with the highest antimicrobial-resistance gene prevalence had a recombination-to-mutation ratio of 4.42 and more AMR-associated mobile elements. Some prophages were over 99% similar to phages infecting other genera, providing genomic signals of ecological genetic exchange.