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Volume 31, Supplement—May 2025
SUPPLEMENT ISSUE
Supplement
Genomic Characterization of Escherichia coli O157:H7 Associated with Multiple Sources, United States
, Molly M. Leeper, Peyton A. Smith, Michael Vasser, Lee S. Katz, Eshaw Vidyaprakash, Heather A. Carleton, and Jessica C. Chen
Table 2
Distribution of espW alleles in the 2,756 STEC O157:H7 isolates included in a genomic characterization of Escherichia coli O157:H7 associated with multiple sources, United States*
| REP code | espW allele | Count |
|---|---|---|
| REPEXH01 |
Full length | 0 |
| Deletion | 727 | |
| Insertion | 0 | |
| Ambiguous | 2 | |
| Absent |
0 |
|
| non-REPEXH01 | Full length | 1,892 |
| Deletion | 77 | |
| Insertion | 22 | |
| Ambiguous | 6 | |
| Absent | 30 |
*Values represent 20% of all STEC O157:H7 isolates in the PulseNet (https://www.cdc.gov/pulsenet/index.html) database with whole-genome sequences available in the National Center for Biotechnology Information Sequence Read Archive (https://www.ncbi.nlm.nih.gov/sra); all 729 REPEXH01 isolates with whole-genome sequences are included, alongside 2,027 non-REPEXH01 STEC O157:H7 isolates. The espW allele was statistically associated with REPEXH01 membership. REPHEXH01, recurring strain of STEC O157:H7; STEC, Shiga toxin–producing Escherichia coli.