Erythromycin-nonsusceptible Streptococcus pneumoniae in Children, 1999–2001
M. Catherine McEllistrem* , Jennifer M. Adams*, Kathleen Shutt*, Laurie T. Sanza†, Richard R. Facklam‡, Cynthia G. Whitney‡, James H. Jorgensen§, and Lee H. Harrison*†
Author affiliations: *University of Pittsburgh Graduate School of Public Health and School of Medicine, Pittsburgh, Pennsylvania, USA; †Johns Hopkins University Bloomberg School of Public Health, Baltimore, Maryland, USA; ‡Centers for Disease Control and Prevention, Atlanta, Georgia, USA; §University of Texas Health Science Center, San Antonio, Texas, USA
Figure. . From 1995 to 2001, the proportion of erythromycin-nonsusceptible pneumococcal strains carrying the mefE gene increased over time by county, season, race, and age group. p<0.01 for all trends except for Anne Arundel County and May–October season (p = 0.02 for those comparisons).
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