Antimicrobial Resistance, Serotypes, Virulence Gene Profiles, and Molecular Characterization of Streptococcus suis Isolated from Healthy Pigs in Thailand
Sampling 58 healthy pigs yielded 176 presumptive isolates, of which 60 were confirmed as S. suis. Multidrug resistance and 65.5% seropositivity were reported despite absence of major classical invasive virulence genes. The findings support One Health surveillance but, with a small sample and only two genomes, are not national prevalence or proof of human transmission.