Ans: B, Strongyloides
An unusual feature of Strongyloides is its capacity to mature inside the gastrointestinal tract of infected individuals and later on penetrate the skin, causing a cycle called autoinfection. This may perpetuate the infection through the host’s lifetime.
Infection with Strongyloides can present as dermatitis, swelling, itching, and lower respiratory tract symptoms.
Diagnosis is made by stool testing for ova and parasites or by stool antigen or serologic antibody testing.
Ivermectin is the first-line therapy.