Active Investigation · Recall in Effect

E. coli Blueberry Outbreak 2026

United States · Recalled frozen blueberries · CDC & FDA investigation
Sources: CDC E. coli Outbreak.

About This E. coli

Cause
Shiga toxin-producing E. coli O145, a bacterium that can damage the gut and kidneys
Onset
Usually 3 to 4 days after eating contaminated food
Spreads by
Contaminated food, here frozen blueberries eaten without cooking
Treatment
Fluids and monitoring; antibiotics usually avoided

What is this E. coli?
E. coli is a large family of bacteria, most of it harmless. This outbreak involves a Shiga toxin-producing type, O145, which can cause severe, sometimes bloody diarrhea. It usually spreads through contaminated food. Frozen fruit is a known risk because it is often eaten without cooking, and freezing does not kill the bacteria.

Sources: CDC About E. coli · CDC Prevention

Treatments & Vaccines in Development

Most people recover from this E. coli with rest and fluids. Antibiotics are usually avoided because they can worsen the kidney complication, and there is no vaccine. Here is what care looks like.

Fluids and rest (supportive care)Supportive care
First-line for most people
Standard of care

Most healthy people with this kind of E. coli recover on their own in about a week. The key is staying hydrated, since the real danger is fluid loss from diarrhea and vomiting. Rest, fluids and monitoring for warning signs are the mainstay of care.

CDC E. coli
Why antibiotics are usually avoidedCaution
Generally not recommended
CDC clinical guidance

For Shiga toxin-producing E. coli like O145, doctors usually avoid antibiotics. In this type of infection antibiotics can raise the risk of hemolytic uremic syndrome, the dangerous kidney complication, rather than help. Anti-diarrheal medicines are also discouraged for the same reason. Treatment focuses on fluids and close monitoring instead.

CDC clinical guidance
E. coli vaccineVaccine
None available

There is no vaccine for this kind of E. coli. Prevention comes down to food safety: avoid recalled products, cook thoroughly since freezing does not kill the bacteria, and wash hands, produce and surfaces. Frozen fruit meant to be eaten raw is a known risk because there is no cooking step.

CDC E. coli Prevention
Approved / in usePositive trial resultsIn clinical trialsEarly researchHalted