| emerging fluoroquinolone-non-susceptible group a streptococci in two different paediatric populations. | clonal emergence of group a streptococci (gas) with reduced susceptibility to fluoroquinolones (fqs) has been increasingly reported. non-susceptibility is associated with various point mutations in the target-encoding genes and has only been described in a few emm types. we used a well-characterised gas clinical paediatric collection from brussels (belgium) and brasília (brazil) to analyse the molecular basis of fq non-susceptibility. gas strains were tested for ciprofloxacin susceptibility and ... | 2009 | 19269141 |