Volume 18, Number 4—April 2012
Research
Comparison of Escherichia coli ST131 Pulsotypes, by Epidemiologic Traits, 1967–2009
Figure

Figure. Prevalence over time of 12 high-prevalence XbaI pulsotypes among 579 Escherichia coli ST131 isolates. High-prevalence pulsotypes are those with >6 isolates (>1% of population) each. Years before 2003 are combined into 3 groups because of the small numbers of isolates. On the x-axis, the number of isolates for the particular period is shown in parentheses below the dates. y-axis prevalence values are based on the total number of isolates in the particular period.
1MASTER (Macrorestriction Analysis of ST131 for Epidemiologic Research) Investigators who contributed data are listed at the end of this article.
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