E Minamata disease Q&A

1. Outbreak & Cause

Q2: What is the cause of Minamata disease?

A2: It is methylmercury discharged from the chemical factory into the sea, which was accumulated in fish and shellfish.

Commentary:
Methylmercury discharged from the Minamata factory of Chisso Corp. into Yatsushiro Sea was accumulated in fish and shellfish.
People who ate a lot of the contaminated fish over a long period of time showed the symptoms of Minamata disease, because it was difficult to distinguish fish contaminated with methylmercury from non-contaminated ones at that time.