【用戶】passpass
【年級】高三上
【評論內容】原文書Ciprofloxacin is the most active agent of this group against Gram-negative organisms, particularly P aeruginosa. Levo-floxacin, the l-isomer of ofloxacin, has superior activity againstGram-positive organisms, especially Streptococcus pneumoniae.Gatifloxacin, gemifloxacin, and moxifloxacin make up a third group of fluoroquinolones with improved activity against Gram-positive organisms, particularly S pneumoniae and some staphylo-cocci. Gemifloxacin is active in vitro against ciprofloxacin-resistant strains of S pneumoniae, but in vivo efficacy is unproven.Norfloxacin, which is no longe...