TABLE 1.

In vitro activities of 10 antimicrobial agents against 53 M. pneumoniae strains

Antimicrobial	MIC (μg/ml) fora:
	Clinical isolates			Reference strain MPFH
	Range	50%	90%
Erythromycin	≤0.007->128	>128	>128	≤0.007
Clarithromycin	≤0.007->128	128	>128	≤0.007
Azithromycin	≤0.007->128	16	64	≤0.007
Josamycin	≤0.007-8	2	4	≤0.007
Tetracycline	0.015-0.25	0.06	0.125	0.06
Doxycycline	≤0.007-0.125	0.06	0.125	0.03
Minocycline	≤0.007-0.125	0.06	0.125	0.06
Ciprofloxacin	0.015-1	0.5	1	0.25
Levofloxacin	0.015-1	0.25	0.5	0.25
Moxifloxacin	≤0.007-0.06	0.03	0.06	0.06

^a50% and 90%, MIC₅₀ and MIC₉₀, respectively.