Which of the following are common examples of parasites?

• A. Pin worms, roundworms, head lice
• B. Strep, impetigo
• C. Flu, cold
• D. Malaria, amoeba

Answer: (A)

Parasites are organisms that live on or in a host and rely on the host for nourishment. In childcare settings, the most familiar examples are pinworms, roundworms, and head lice. Pinworms reside in the intestines and lay eggs around the anal area, causing itching and possible transmission when children touch contaminated surfaces. Roundworms live in the intestines and can spread through contaminated hands or objects. Head lice live on the scalp and feed on blood, spreading through direct contact or shared items. These are classic, commonly encountered parasites in everyday daycare health education. The other options involve bacteria or viruses, not parasites, so they aren’t the typical examples you’d be tested on in this context.