Volume 21, Number 8—August 2015
CME ACTIVITY - Synopsis
Escherichia coli O157 Outbreaks in the United States, 2003–2012
Figure 3

Figure 3. Number of Escherichia coli O157 outbreaks by month and by A) transmission mode (n = 390) and B) selected food categories (n = 255), United States, 2003–2012.