Foodborne IllnessQuestion 12 of 240
A sushi chef in NYC prepares raw fish dishes. Which parasite is a specific concern in raw or undercooked marine fish, and what control addresses it?
a.Cyclospora; controlled by washing hands
b.Cryptosporidium; controlled by adding vinegar to the rice
c.Giardia; controlled by cooking rice thoroughly
d.Anisakis (roundworm); controlled by freezing fish to required time-temperature parameters before raw service
Explanation
Anisakis is a roundworm found in marine fish that can cause abdominal illness when fish is eaten raw or undercooked. The control is freezing the fish to required parameters, for example -4°F for the specified time, before serving it raw, which kills the parasite. Neither acidifying sushi rice nor handwashing destroys parasites already in the fish flesh.
This topic, taught in full in the NYC Food Protection Certificate guide. NYC Food Protection Certificate — Complete Study Guide (2026) — PDF + EPUB, $14.99 · 14-day refund →
Practice all 240 questions free — no signup required.
Own the complete NYC Food Protection Certificate guide — PDF + EPUB, $14.99 →
Related questions on this topic
- Several guests at a Manhattan catering hall report sudden vomiting and diarrhea about 24 to 36 hours after a banquet. The most common cause of such outbreaks, often spread by an ill server handling ready-to-eat food, is:
- Shigella, one of the Big 6 pathogens, is commonly transmitted by which route?
- A deli in Brooklyn stores ready-to-eat cold cuts for weeks in the walk-in at 40°F. Which pathogen is uniquely dangerous here because it can still grow at refrigeration temperatures and threatens pregnant women?
- A customer eats seared tuna and within minutes develops flushing, a peppery taste, headache, and a rash. The tuna had been temperature-abused. This reaction is caused by:
- Ciguatera poisoning is associated with eating certain large predatory reef fish (such as barracuda or grouper). What makes it difficult to prevent in the kitchen?
- Which statement about shellfish toxins (such as paralytic shellfish poisoning) is correct?
Last reviewed: · editorial process
PrepPass team · Verified against NYC Food Protection Certificate Exam · How we review