what is a parasitic infection
Top 10 facts about the world. Parasitic infection is contamination of one organism with another living organism that then begins to feed off or reside in the initial organism.he Giardia parasite can be ingested by drinking untreated water. Diarrhea and vomiting may result from a parasitic infection. Parasites often infect a person's gastrointestinal tract. Stool samples that are collected at home are usually placed into plastic containers.