Antimicrobial susceptibility pattern of Stenotrophomonas species isolated from Mexico

species are multi-resistant bacteria with ability to cause opportunistic infections. We isolated 45 species from soil, sewage and the clinic with the aim of investigating their susceptibility to commonly used antimicrobial agents. The identities of isolates were confirmed with 16S rRNA gene sequence and MALDI-TOF analysis. Anti-microbial resistance, biofilm production and clonal diversity were also evaluated. The minimum inhibitory concentration technique as described by Clinical & Laboratory Standards Institute: CLSI Guidelines (CLSI) was employed for the evaluation of isolate susceptibility to antibiotics. Forty-five species which include 36 environmental strains and 9 clinical strains of were considered in this study. 32 (88.9 %) environmental strains were identified to be , 2 (5.6 %) were , and 2 (5.6 %) cluster as spp. isolates were resistant to at least six of the antibiotics tested, including / ( ). Environmental isolates from this study were resistant to SXT which is commonly used for the treatment of infections. This informs the need for good public hygiene as the environment could be a reservoir of multi-resistant bacteria. It also buttresses the importance of surveillance study in the management of bacterial resistance.