The first signs of E. coli infection can vary depending on the strain of the bacteria and the severity of the infection. Symptoms usually appear within 2 to 5 days after exposure to the bacteria. Some of the common signs and symptoms of E. coli infection include:
- Diarrhea, which may range from mild and watery to severe and bloody
- Stomach cramping, pain or tenderness
- Nausea and vomiting, in some people
- Fatigue
- Loss of appetite or nausea
- Low-grade fever
In some cases, E. coli infection can lead to more severe symptoms, such as dehydration, reduced urination, tiredness, pale skin, yellow skin and eyes, puffiness from fluid retention, seizures, and kidney failure. If you experience persistent, severe, or bloody diarrhea, or if you have a fever higher than 102˚F, you should contact your healthcare provider immediately.
