The Ascaris lumbricoides is the other name for the giant roundworm in case of human beings and it belongs to the group of the phylum Nematoda. This kind of roundworm cause a kind of disease called ascariasis and it is considered to be the largest and the most common worm living within the human body. The Ascaris lumbricoides is mainly found in the body of humans living in the subtropical and the tropical countries. To get rid of this worm you should go through hygienic habits/culture and fecal treatment once in every year. The infections caused by the worm can be best treated with a kind of drug called ascaricides.