Yuk!
I went in one of those restaurants ( a cross between a supermarket and an aquarium) in Manilla years ago. We ate a meal of freshly bashed over the head and cooked fish.
Once we had eaten up, and paid the bill, the waitress meticulously handed each of us a slip of paper that had written on it:
"Beware red tide disease!"
It then went on to warn that some fish caught in the Manilla Bay area were infected with this disease. The restaurant was within a stone's throw of the bay.
The resataurant vigorously defended their fish, saying that it had not come from the bay.
The next day one of my colleagues was so ill he couldn't leave his hotel bathroom.
When I told the hotel reception about the "Red Tide Disease" warning they calmly said:
"No he probably hasn't got that..he would be in hospital or dead by now if he had.."
Nice!