Table 1.
Listeria monocytogenes Pulsed-Field Gel Electrophoresis Patterns and Serotype Corresponding With Outbreak-Associated Illnesses, Ice Cream Samples, and Environmental Swabs—United States, January 2010–April 2015
| Pulsed-Field Gel Electrophoresis Pattern Number |
Source | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| PulseNet Pattern Name | Serotype | Patients (No.) |
Patient State of Residence (No. Patients) |
Ice Cream (N=168)a |
Company A Production Facility |
||||
|
AscI Restriction Enzyme |
ApaI Restriction Enzyme |
Texas (n=4) |
Oklahoma (n=30) |
Alabama (n=1) |
|||||
| 1 | GX6A16.0026 | GX6A12.0227 | 1/2b | 2 | Kansas (2) | 11 | … | … | … |
| 2 | GX6A16.0020 | GX6A12.0227 | 1/2b | 1 | Kansas | 11 | 1 | … | … |
| 3 | GX6A16.0061 | GX6A12.0026 | 1/2b | 1 | Kansas | 26 | 2 | … | … |
| 4 | GX6A16.0026 | GX6A12.0489 | … | … | … | 8 | … | … | … |
| 5 | GX6A16.0026 | GX6A12.0077 | … | … | … | 3 | … | … | … |
| 6 | GX6A16.0061 | GX6A12.1512 | … | … | … | 1 | … | … | … |
| 7 | GX6A16.0061 | GX6A12.2551 | … | … | … | 3 | … | … | … |
| 8 | GX6A16.0061 | GX6A12.2358 | … | … | … | 1 | … | … | … |
| 9 | GX6A16.0026 | GX6A12.0094 | … | … | … | … | 1 | … | … |
| 10 | GX6A16.0416 | GX6A12.2353 | … | … | … | 4 | … | … | … |
| 11 | GX6A16.0336 | GX6A12.1840 | … | … | … | 17 | … | 19 | … |
| 12 | GX6A16.0336 | GX6A12.2255 | 3b | 5 | Arizona, Oklahoma, Texas (3) | 2 | … | 11 | … |
| 13 | GX6A16.0617 | GX6A12.1840 | … | … | … | 2 | … | … | … |
| 14 | GX6A16.0207 | GX6A12.0511 | … | … | … | … | … | … | 1 |
| 15 | GX6A16.0282 | GX6A12.0355 | 1/2a | 1 | Kansas | … | … | … | … |
a
Laboratories sequenced 147 ice cream isolates from ice cream products produced in Texas; to conserve resources, pulsed-field gel electrophoresis (PFGE) was performed on 68. PFGE was completed for all 21 ice cream isolates from ice cream products produced in Oklahoma.