Figure. . A, Macrolides consumption (gram x 1000,000) in Taiwan and the trends of erythromycin-resistant group A Streptococcus (EM-R GAS), group B Streptococcus (EM-R GBS), and S. pneumoniae in National Taiwan University Hospital from 1991 to 2000. Macrolides include intravenous and oral forms of erythromycin and oral forms of clarithromycin, roxithromycin, and azithromycin. B,. Distribution of erythromycin-resistant M-phenotype among isolates of streptococci. Other streptococci include Groups C, F, and G, and viridans group streptococci. Number in each bar indicates the percentage of erythromycin-resistant isolates. Number above each bar indicates the percentage of M-phenotype among erythromycin-resistant isolates.