E. Coli
E. Coli (Escherichia coli) is a type of bacteria that normally lives in the intestines of healthy humans and animals. While most strains are harmless, some can cause serious foodborne illnesses.
E. coli are germs called bacteria. They are found in many places, including in the environment, foods, water, and the intestines of people and animals.
Most E. coli are harmless and are part of a healthy intestinal tract. E. coli help us digest food, produce vitamins, and protect us from harmful germs.
But some E. coli can make people sick with diarrhea, urinary tract infections, pneumonia, sepsis, and other illnesses. This website focuses on the kinds of E. coli that cause diarrhea.
How are you infected?
- Contaminated food or water: Undercooked beef, unpasteurized milk or juices, and contaminated vegetables are common sources.
- Person-to-person contact: This can happen if an infected person doesn't wash their hands after using the bathroom and then handles food or shares items.
- Contact with animals: Particularlyin farms or petting zoos, where hygiene may be compromised.
Symptoms of E. coli
Symptoms of E. coli vary depending on the type of E. coli and the severity of the infection:
- Diarrhea: Often bloody or watery
- Stomach cramps: Severe
- Vomiting: May occur
- Fever: May be present
- Dehydration: Signs include little to no urination, dark urine, dry mouth or throat, dizziness, or lightheadedness
- Kidney problems: In rare cases, E. coli can lead to hemolytic uremic syndrome (HUS), which can cause kidney failure. HUS can be life-threatening and is more likely to occur in children and the elderly.
- Other symptoms: May include gas, loss of appetite, and tiredness.
Symptoms usually begin 24 to 72 hours after exposure to E. coli. Most people recover without treatment within 5 to 7 days.
If you have diarrhea and aren't very sick, you can try drinking plenty of fluids to stay hydrated.

What is treatment?
Treatment for E. coli infection primarily focuses on:
- Hydration: Staying hydrated is crucial, especially if diarrhea is severe.
- Avoiding certain medications: Only take antibiotics if advised to do so by a healthcare provider.
- Rest: Allowing your body to recover.
In severe cases, hospitalization may be required, especially if complications like hemolytic uremic syndrome (HUS) develop.

How do you protect yourself?
To reduce your risk of E. coli infection, you can:
- Practice good hygiene: Wash your hands thoroughly with soap and water, especially after using the bathroom and before handling food.
- Cook food thoroughly: Make sure meat, especially ground beef, is cooked to a safe temperature.
- Avoid unpasteurized products: Do not drink or use unpasteurized dairy and juices.
- Wash fruits and vegetables: Rinse them under running water before eating.
- Stay informed: Follow food safety alerts and guidelines, particularly when traveling.
People at Increased Risk
Anyone can get an E. coli infection. But some groups of people have an increased chance of infection and getting seriously ill. These groups include:
- Children who are younger than 5 years
- Adults who are 65 years and older
- People who have a weakened immune system
- International travelers
