Answer

Hello,

A parasite is an organism which feeds off, and usually within, a host body, such as our own body, or other living organisms, like plants and animals.

Parasites are not designed to kill you, they simply rob your vital organs of their nutrition, causing them to eventually malfunction .

Almost any persistent digestive disorder could result from a parasite. The most common symptoms are diarrhea and abdominal pain. Other symptoms include nausea, heartburn, vomiting, gas and bloating, foul-smelling stools, anorexia or weight loss, gastritis, fever and chills, headache, constipation, blood or mucus in stools, and fatigue.



Other health problems can result from disturbed digestive processes or toxins produced by the parasite, such as aches and pains in the joints and muscles, anemia, allergies, chronic fatigue, immune dysfunction, sleep disturbances and depression.

As such there is small chance of transmission of infection by stepping on dog faeces provided dog is infected .Example tapeworm eggs are passed in dog faeces, so human infection may occur by patting a dog then touching your mouth, by kissing a dog, through contaminated soil items or through consuming contaminated food or water . Humans can only be infected by eating eggs passed by an infected dog . So the risk of developing infection is there is children touched infected material to their mouth from carpet .

Check this link

http://access.health.qld.gov.au/hid/InfectionsandParasites/Parasites/hydatidDisease_fs.asp