exchange (Boxall et al., 2004; Gatica and Cytryn, 2013; Marti et al.,
2013). These anthropogenic wastes are usually contaminated with
antimicrobial agents originating from prophylactic or therapeutic
treatments (Boxall, 2004; Chee-Sanford et al., 2009) which support
e even if present only at sub-inhibitory concentrationse the fixation
of new resistance traits in the affected bacterial populations
(Andersson and Hughes, 2014; You and Silbergeld, 2014)