Survey on antimicrobial-resistant bacteria in surface water in Tokyo

： The current state of the tendency of antimicrobial-resistance and distribution

Abstract

Antimicrobial-resistant bacteria, which are clinically important, are detected not only in clinical settings but also in aquatic environments, such as rivers, in the world. Environmental bacteria are suspected as a reservoir of antimicrobial-resistance (AMR) for human pathogenic bacteria. However, there is very little data available about AMR including environmental bacteria in Tokyo. To obtain some data about AMR in environmental bacteria of surface water, we investigated AMR from 2016-2017 at 20 sites of surface water in Tokyo. As a result, AMR were detected at all sampling sites, and we got 86 isolates. Of which, 64% of isolates showed resistance with ampicillin with sulbactam (SAM20) and 54% with clarithromycin (CLR 15).