Enterobius vermicularis infection is caused by what type of organism?

Enterobius vermicularis infection is caused by what type of organism?

• A. A Virus
• B. A Bacterium
• C. A Parasite
• D. A Fungus

Answer: (C)

Classification of infectious agents is the focus here. Enterobius vermicularis is a parasitic worm, a nematode, that lives in the human intestine and can cause enterobiasis. It is a multicellular parasite, not a virus (which is noncellular), not a bacterium (a single-celled prokaryote), and not a fungus (a different group of eukaryotes). This makes it the best answer because it’s clearly a parasitic organism rather than a viral, bacterial, or fungal pathogen. In children, pinworm infections are common and spread by ingestion of eggs, typically causing perianal itching at night.

Classification of infectious agents is the focus here. Enterobius vermicularis is a parasitic worm, a nematode, that lives in the human intestine and can cause enterobiasis. It is a multicellular parasite, not a virus (which is noncellular), not a bacterium (a single-celled prokaryote), and not a fungus (a different group of eukaryotes). This makes it the best answer because it’s clearly a parasitic organism rather than a viral, bacterial, or fungal pathogen. In children, pinworm infections are common and spread by ingestion of eggs, typically causing perianal itching at night.