In vitro activities of five quinolones against Chlamydia pneumoniae

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Abstract
The in vitro susceptibilities of 10 strains of Chlamydia pneumoniae were determined for five quinolones, including ciprofloxacin, ofloxacin, fleroxacin, temafloxacin, and sparfloxacin. Sparfloxacin was the most active compound tested, followed by ofloxacin and temafloxacin. Ciprofloxacin and fleroxacin were the least active. The use of HEp-2 cells for testing C. pneumoniae resulted in larger inclusions but essentially the same endpoints as were seen with use of HeLa 229 cells.