Enterococci and Coliform are parasites in the intestine.They are classified as Type IV Streptococcus, which are Facultative Anaerobic Bacteria. The type of Enterococci which commonly infects the human body, Fecal Enterococci, can cause more infections because this bacteria has a strong resistance to antibiotics. Coilform is a common pathogen, which causes infections of the Urinary Tract, Gastrointestinal Tract and Pelvic area because the Fecal Enterococci is closely related to Heart Tissues. Once Enterococci enters the blood, it is a very dangerous pathogen to the Cardiovascular System.