2019 Multistate Outbreak of E. coli O157:H7 Infections Linked to Iceberg Lettuce

In November 2019, state, local, and CDC public health investigators and the FDA investigated an outbreak of E. coli O157:H7 infections linked to iceberg lettuce. Eleven outbreak associated cases were identified. Five people were hospitalized, and no one died.

The Vermont Department of Health collected iceberg lettuce samples from 3 sandwich chain locations. FDA conducted a traceback and determined the lettuce was from a common producer and farm.

The outbreak was assigned CDC Cluster Code ID 1912VTEXH-1.

Overview

Outbreak began:November 2019
Affected country:US
States/territories:ME, NV, NH, VT
Pathogen:E. coli O157:H7
Vehicle(s):Leafy greens
Location(s):Restaurant
Molecular test results:Not reported

Health impact

Total ill:11
Number hospitalized:5

Sources & documents

Report / reference links
Outbreak documents