What is a primary cause of Anisakis infection?

Anisakis infection is primarily caused by the consumption of raw or undercooked fish or seafood that carries the larvae of the Anisakis parasite. Sushi, particularly when it contains raw fish, can be a vector for this infection if the fish has not been properly frozen before consumption. Proper freezing of sushi is essential as it kills the Anisakis larvae, reducing the risk of infection. Therefore, improper freezing of sushi directly contributes to the likelihood of Anisakis exposure and infection in individuals who eat it. Ensuring that fish intended for consumption in raw preparations is adequately frozen before serving is a critical food safety measure. This helps to mitigate the risk of parasitic infections associated with seafood.