Note that ceviche is a different class of "raw" than e.g. sushi, in that the lime juice does kill _some_ (but not all) parasites. According to https://honest-food.net/ceviche-recipe-safety-parasites-2/, fresh farmed salmon is ok to eat raw, while pacific salmon is pretty risky, on the basis of it being susceptible to seal worm. The article mentions a long freeze (at -4F) being an acceptable way to kill off those parasites before consumption.
To get sick once I don't mind, Im more afraid of those parasites the live with you without noticing. But most Salmon in Europe is transported frozen from Norway before being sold. Even though farmed Salmon comes with it's own problems.
