All of the following are true about Trichinella spiralis except
**Core Concept**
Trichinella spiralis is a parasitic nematode that causes trichinosis, a zoonotic infection acquired through the consumption of undercooked or raw meat, particularly pork, containing encysted larvae.
**Why the Correct Answer is Right**
Trichinella spiralis has a complex life cycle involving two hosts: a definitive host (usually a carnivore) and an intermediate host (usually a pig or other mammal). The larvae are ingested by the intermediate host, where they encyst in muscle tissue. When an infected meat is consumed by a human, the larvae are released from the cysts, penetrate the intestinal wall, and migrate to other tissues, including muscles, where they encyst again. This migration can cause severe inflammation and tissue damage, leading to symptoms such as muscle pain, fever, and gastrointestinal issues.
**Why Each Wrong Option is Incorrect**
**Option A:** Trichinella spiralis is a rare cause of trichinosis. **This is incorrect because Trichinella spiralis is a common cause of trichinosis, particularly in areas where pork is consumed undercooked or raw.**
**Option B:** Trichinella spiralis infection can be treated with anthelmintic drugs. **This is correct, but not relevant to the question.**
**Option C:** Trichinella spiralis has a similar life cycle to Toxocara cati. **This is incorrect because while both parasites have a complex life cycle involving multiple hosts, their life cycles are not identical.**
**Option D:** Trichinella spiralis infection can cause severe anaphylaxis. **This is incorrect because while Trichinella spiralis infection can cause severe allergic reactions, anaphylaxis is not a common complication.**
**Clinical Pearl / High-Yield Fact**
It is essential to cook pork to an internal temperature of at least 160°F (71°C) to prevent Trichinella spiralis infection. Freezing meat at -10°F (-23°C) for at least 30 days can also kill the larvae.
**Correct Answer: C. Trichinella spiralis has a similar life cycle to Toxocara cati.**