Signs and Symptoms
Bacteria and viruses tend to cause acute illness while parasites are more likely to cause chronic and/or intermittent illness. Each type of illness has its own incubation period, from several hours to days after consuming contaminated food or water, and length of illness from days to weeks.
- Abdominal pain
- Diarrhea, which may be watery, frequent, intermittent and in some cases bloody
Other symptoms may include:
- Weight loss
- Difficulty swallowing
- Muscle weakness; some toxins may cause paralysis
- Double vision
In some serious cases, the disease may progress to include:
Some cases of food and waterborne illnesses can be fatal.