Could something so common really be a serious health risk?
"This is a situation where we do not have a human health risk," he said.
Given that the couple are leaving out a very small amount of food, there is clearly no health risk.
All water should be regarded as a potential health risk.
The relationship between a poor environment and health risks is now clear.
The level of contamination was not high enough to be considered a health risk.
And other players have said Johnson should not play because of possible health risks.
But the health risk is not confined to those people, the officials say.
They are not any more of a health risk than other common pets.
In some cases, the health risks are probably quite limited, he said.