异尖线虫病的主要致病源是简单异尖线虫幼虫。

Anisakis simplex larvae is the most important causative agent of anisakiasis.

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一旦一种新的致病源传播给一个个体，它可能向更多的人传播。

Once a new pathogen is introduced in one individual, it may spread to the larger population.

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致病源为细菌产生的毒素，会引起发烧、红疹、低血压、极少数病例还会出现死亡。

It is caused by toxins produced by bacteria, and can cause fever, rash, low blood pressure, and in rare cases, death.

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