這種捕風捉影的事

中國人每年吃掉幾十億隻大閘蟹，有多少人中毒的?

即使有"砒霜毒900倍的二惡英"的，含量是多少?  達不到一定的含量，也依然不會造成危害。

另外最好了解一下，美國每年食物中毒死亡3000人

While the food supply in the United States is one of the safest in the world, the Centers for Disease Control and Prevention (CDC) estimates that each year roughly 1 out of 6 Americans (or 48 million people) gets sick, 128,000 are hospitalized, and 3,000 die from foodborne diseases