Primary-source library

Official E. coli, HUS, and outbreak sources

Outbreak information changes as interviews, laboratory comparisons, inspections, and traceback work continue. Check the update date and save the version that supports your timeline.

Links go to the issuing agency, legislature, court material, or public medical source whenever one is available. Each page still explains what the source can and cannot establish in an individual claim.

Published August 23, 2026 · Last reviewed August 23, 2026

Centers for Disease Control and Prevention
About E. coli infection
Symptoms, transmission, complications, and prevention information for E. coli infection.
Covers: E. coli · symptoms · STEC
Centers for Disease Control and Prevention
Food poisoning symptoms
Incubation and symptom information, including severe signs and HUS risk associated with E. coli.
Covers: symptoms · HUS · medical care
Centers for Disease Control and Prevention
Steps in a foodborne outbreak investigation
How epidemiologic, traceback, and food or environmental evidence are combined.
Covers: outbreak · sequencing · traceback
U.S. Food and Drug Administration
Investigations of foodborne illness outbreaks
FDA's current and completed outbreak investigations for foods under its jurisdiction.
Covers: FDA · outbreak investigations
National Institute of Diabetes and Digestive and Kidney Diseases
Hemolytic uremic syndrome in children
Federal medical information about HUS symptoms, diagnosis, treatment, and complications in children.
Covers: HUS · kidney injury
USDA Food Safety and Inspection Service
FSIS recalls and public health alerts
Official alerts and recalls for meat, poultry, and egg products.
Covers: USDA · recalls · ground beef

How sources are selected

We prefer statutes, regulations, issuing agencies, court material, and federal medical or safety sources. A commercial source is used only when it is the primary source for its own policy or product and is labeled accordingly.

Sources support factual background. They do not substitute for jurisdictional research, expert analysis, medical diagnosis, or review of the complete record. Broken links and materially changed guidance are corrected during page review.