Symptoms usually include:
- Watery diarrhea
- Stomach cramps
- Loss of appetite
- Weight loss
- Slight fever
- Nausea
- Fatigue
Symptoms usually begin about one week after exposure to the parasite but can begin as short as two days or as long as two weeks after exposure to the parasite.
If the infection is not treated, symptoms can last for a few days to months. The symptoms may go in cycles in which you seem to get better for a few days, then feel worse, before the illness ends.