E. coli in Colorado
E. coli (Escherichia coli) are bacteria found in intestines. While most strains are harmless, some cause severe food poisoning with bloody diarrhea. The most dangerous strain, E. coli O157:H7, produces toxins causing kidney failure, especially in children. Track E. coli activity and outbreaks specific to Colorado.
What is E. coli?
Most E. coli strains are part of healthy gut flora. However, Shiga toxin-producing E. coli (STEC), particularly O157:H7, cause approximately 265,000 illnesses annually in the U.S. About 5-10% of diagnosed cases develop hemolytic uremic syndrome (HUS), a life-threatening kidney condition. Undercooked ground beef, contaminated produce, and unpasteurized dairy are common sources.
Symptoms
- Severe stomach cramps
- Diarrhea (often bloody)
- Vomiting
- Mild fever (usually <101°F)
- Symptoms last 5-10 days
- HUS warning signs: Decreased urination, extreme fatigue, pale skin, bruising
Transmission
Eating contaminated food (ground beef, raw produce, unpasteurized dairy); contaminated water; person-to-person (poor hygiene); contact with infected animals
Contagious Period: While bacteria present in stool (can persist weeks after recovery); requires good hygiene
Prevention
- Cook ground beef to 160°F (use food thermometer)
- Avoid raw milk, unpasteurized juice, and raw cookie dough
- Wash hands thoroughly after bathroom, changing diapers, before preparing food
- Wash fruits and vegetables under running water
- Avoid cross-contamination (separate raw meat from produce)
- Don't swallow water when swimming in lakes, pools, or water parks
- Keep children with diarrhea out of swimming areas and daycare
- Avoid preparing food for others when ill
Colorado Health Resources
Local health department information and state-specific prevention guidance
We're Monitoring Colorado
Our AI-powered surveillance continuously monitors E. coli activity across Colorado. We track data from state health departments, local hospitals, CDC reports, and 50+ global health sources to provide early warning of emerging threats.
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Colorado Health Department
For official state health alerts, vaccination locations, and public health guidance specific to Colorado, visit your state health department's website.
Protecting Yourself in Colorado
Whether you live in Colorado, are traveling there, or have family in the state, understanding E. coli prevention is essential. Follow these evidence-based prevention measures:
Prevention Measures
- Cook ground beef to 160°F (use food thermometer)
- Avoid raw milk, unpasteurized juice, and raw cookie dough
- Wash hands thoroughly after bathroom, changing diapers, before preparing food
- Wash fruits and vegetables under running water
- Avoid cross-contamination (separate raw meat from produce)
- Don't swallow water when swimming in lakes, pools, or water parks
- Keep children with diarrhea out of swimming areas and daycare
- Avoid preparing food for others when ill
When to Seek Care
If you experience symptoms of E. coli in Colorado, contact your healthcare provider immediately. Early diagnosis and treatment improve outcomes significantly.
Emergency symptoms: If you experience severe symptoms, difficulty breathing, or signs of dehydration, call 911 or go to your nearest emergency room.
Expert Resources & References
Trusted information from leading health organizations
WHO
Global disease surveillance and guidelines from the World Health Organization
View WHO Resources →Medically Reviewed Content
Disease information on Virus Watcher is reviewed by our Chief Epidemiologist, a former CDC lead analyst for FluSight forecasting. Outbreak data is aggregated from verified sources including BEACON, ProMED, WHO, CDC, and 50+ national health agencies. This information is for educational purposes and should not replace professional medical advice.
Last reviewed: 2026-04-03
Frequently Asked Questions
Common questions about E. coli answered by our epidemiology team
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