What are some symptoms associated with Ascaris infections?

Ascaris infections, caused by the intestinal roundworm Ascaris lumbricoides, often result in symptoms that stem from the parasitic nature of the infection. One of the key manifestations of this type of infection is frailty and low energy, which are indicative of malnutrition and a compromised host immune response due to the worm's nutrient consumption. Patients may experience weight loss, anemia, and a general state of malaise, all contributed to by the competing demands on the body's resources as the parasite feeds on the nutrients that the host would otherwise absorb.

While other symptoms such as abdominal pain, nausea, and vomiting may also be present in some cases, they are not consistent primary indicators associated specifically with Ascaris infections. In particular, high fever and chills are not typical for this type of helminthic infection, as these symptoms would suggest a more acute inflammatory or infectious response, which is less common with Ascaris. Thus, the correct answer effectively highlights the chronic and debilitating impact of parasitism characteristic of Ascaris infections.