Volume 24, Number 12—December 2018
Research
Highly Pathogenic Clone of Shiga Toxin–Producing Escherichia coli O157:H7, England and Wales
Figure 2
![Timed phylogeny of Shiga toxin–producing Escherichia coli O157:H7 sublineage IIb isolates illustrating the sequential loss of stx2c and subsequent gain of stx2a. Red indicates stx2a; green, stx negative; blue, stx2c. Scale bar indicates years in the past.](/eid/images/18-0409-F2.jpg)
Figure 2. Timed phylogeny of Shiga toxin–producing Escherichia coli O157:H7 sublineage IIb isolates illustrating the sequential loss of stx2c and subsequent gain of stx2a. Scale bar indicates years in the past.
1These first authors contributed equally to this article.
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