In 2000 the census takers reported an undercount of 1.81%.

2000年的人口普查工作者称大约有1.81%的人未被统计。

In fact, this figure may severely undercount the true number of poisonings since many sufferers attribute their flu-like symptoms to something other than contaminated seafood.

事实上，这个数字可能严重低估了真正的中毒人数，因为许多患者把流感症状归罪于其它原因而不是受污染的海鲜。