Which helminth is known to have worms and eggs in the stool of infected individuals?

Ascaris lumbricoides is a large intestinal roundworm and one of the most common helminthic infections in humans. This organism sheds fertile eggs that can be identified in the stool of infected individuals, making it a key indicator of infection. The presence of these eggs in stool samples is crucial for diagnosing ascariasis, as they can be easily detected using microscopic examination.

The adult worms of Ascaris lumbricoides can also inhabit the intestines, potentially leading to complications such as obstruction or malnutrition, especially in cases of heavy infestation. This lifecycle involves both eggs excreted in the feces and the adult worms residing in the intestines, which supports the characteristic finding of both worms and eggs in the stool.

In contrast, the other options—Strongyloides stercoralis, Enterobius vermicularis, and Toxocara canis—have different characteristics. Strongyloides can lead to infection primarily via skin penetration and typically doesn't result in eggs being present in the stool in the same manner. Enterobius, commonly known as pinworm, produces eggs that are usually detected around the anal area rather than in stool. Toxocara canis is primarily associated with dogs and its eggs