1. Melanie, Spencer, Steven.

2.  Is caused by animal and human waste getting in the water supply.  People with low immune systems can developed life threating illness.  Not a known treatment for it.

3.  You can keep safe from this by washing your hands, drinking safe clean water, eat safe food, and avoiding contact with infected people or animals

4.  Slight fever.  Upset stomach.  Stomach cramps.  Watery diarrhea.

5.  You will notice signs of swallowing this within 2 to 10 days.  People at risk for this is people who deal with human waste such as day care workers and such.

6.  If you have a good immune system then the best thing to do is to drink lots of liquids and get some sleep.  If you don’t have a good immune system then you might need special treatment from the doctor.

7.  It is a parasite  It colonizes and reproduces in the small intestines  The parasite causes giardiasis also known as beaver fever.

8.  Diarrhea  Excess gas  Stomach/abdominal cramps  Headache/Nausea  Loss of appetite  Vomiting

9.  Better hygiene  Use medication

10.  Is a bacteria that is closely related to Salmonella  Only naturally found in humans and apes  Become infected by ingestion of the bacteria  Bacteria causes shigellosis

11.  Diarrhea  Dysentary

12.  Better hygiene  antibiotics

13.  http://www.cdc.gov/ http://www.cdc.gov/