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A $1 Burrito Promotion and a Campus Norovirus Outbreak

ILdisease outbreakadvisorymedium confidence
Confirmed Threat

On November 22, 2023, the Evanston Health and Human Services Department announced it was investigating a norovirus outbreak among Northwestern University students possibly linked to a $1 burrito promotion held at a local Big Wig Tacos & Burritos on Saturday, November 18. Students reported vomiting, diarrhea, and stomach cramps after the event.

Alerts
1
Response
Killed
Injured
Institution
Northwestern University
Private R1 · IL
~23,000 studentsNorthwestern Alert
Confirmed Timeline

Alert Sequence

1 message in sequence

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTEmail
The Evanston Health and Human Services Department is investigating a cluster of gastrointestinal illness, consistent with norovirus, among Northwestern students. Many of those affected reported eating at a $1 burrito promotion on Saturday, Nov. 18. Symptoms include sudden onset of vomiting, diarrhea, nausea and stomach cramps. Norovirus is highly contagious and spreads through contaminated food, surfaces and close contact. If you are ill, stay home, drink fluids, and do not prepare food for others. Wash your hands thoroughly with soap and water; hand sanitizer alone does not reliably kill norovirus.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The notice attributes the investigation to the Evanston Health and Human Services Department, the local authority, and ties it to a specific dated event (the Nov. 18 promotion) so students can self-assess exposure.
The clause 'hand sanitizer alone does not reliably kill norovirus' is a norovirus-specific correction; alcohol gel is far less effective against this non-enveloped virus than soap-and-water washing.
The 'do not prepare food for others' instruction targets norovirus's notorious secondary spread in dorm kitchens and shared dining settings.
Context

Background

Norovirus is the leading cause of acute gastroenteritis outbreaks on US campuses, spreading explosively through shared food, surfaces, and close quarters. The November 2023 Northwestern episode drew national attention because the suspected vehicle was a $1 burrito promotion at an Evanston Big Wig Tacos & Burritos on Saturday, November 18, 2023. As CBS Chicago reported, the Evanston Health and Human Services Department opened an investigation after illness complaints poured in, while the restaurant noted it had passed a routine inspection before the event and cooperated fully. One Northwestern student described an emergency-room visit. The case illustrates the campus public-health truth that hand sanitizer is no substitute for soap-and-water handwashing against norovirus.
Analysis

Key Findings

The suspected vehicle was a discounted $1 burrito promotion on November 18, 2023, an unusually specific and memorable exposure point
The investigation was led by the Evanston Health and Human Services Department, with Northwestern assisting
Health messaging stressed that hand sanitizer alone does not reliably kill norovirus — soap-and-water washing is required
The restaurant had passed a routine pre-event inspection and cooperated with investigators; no single cause was conclusively confirmed
Outcome
The Evanston Health Department investigated alongside Northwestern University; the restaurant had passed a routine inspection before the event and cooperated fully. The outbreak was characteristic of norovirus, which is highly contagious and spreads rapidly in dense campus settings.
Provenance

Sources

  1. News
  2. News
  3. News
  4. News
Tags
norovirusdisease-outbreakpublic-healthillinoisfoodbornegastroenteritisadvisory
Added May 2026Updated May 2026Via ingestion