Det er påvist, at eksponering for subinhibitoriske koncentrationer af quinoloner forårsager væsentligt øget mutationsfrekvens i E. coli, stafylokokker, pneumokokker og Mycobacterium spp. foruden selektion efter resistens i sig selv (3).
It has been shown that exposure to quinolones at subinhibitory concentrations significantly increase the mutation rate in E. coli, staphylococci, pneumococci and Mycobacterium spp., as well as selecting for resistance per se (3).