| genetic analyses of beta-lactamase negative ampicillin-resistant strains of haemophilus influenzae isolated in okinawa, japan. | recently, the instance of beta-lactamase-negative ampicillin (amp)-resistant (blnar) strains of haemophilus influenzae has exhibited a marked increase in japan. our group determined the mics of 160 clinical isolates of h. influenzae at a university hospital in okinawa, the southernmost part of japan, and found that 27 strains were blnar, while 24 strains were beta-lactamase-producing. among the latter, 2 strains were resistant to amp/clavulanic acid. blnar strains were shown to be more resistant ... | 2006 | 16495632 |
| [antimicrobial susceptibility and prevalence of beta-lactamase producing clinical isolates in southern kyushu. the results of collaborative study from 1999 to 2000]. | the positivity of beta-lactamase and antimicrobial susceptibility were determined in a total of 1,358 clinical isolates at 15 hospitals and clinics in four prefectures in southern kyushu (okinawa, miyazaki, kagoshima and kumamoto) during the period from december 1999 to february 2000. the isolates collected comprised of 176 strains of s. aureus, 203 of h. influenzae, 102 of m. catarrhalis, 206 of e. coli, 153 of k. pneumoniae, 99 of e. cloacae, 95 of s. marcescens, 201 of p. aeruginosa, 79 of e. ... | 2002 | 12599533 |