A story posted an hour agoearlier this evening on Market Watch says that the ten confirmed deaths mentioned in the original recall announcement were part of a food trial involving up to fifty animals. This suggests a possible mortality rate of 20 percent.

“We anticipate the numbers [of dead animals] will increase,” said Stephen Sundlof, the FDA’s director of veterinary medicine, in a call with reporters. “We are still very early in our investigation.”

The FDA does seem fairly confident that the source of the problem is wheat gluten.

Update: A more detailed AP story. Seems Menu started receiving complaints of pet illness and death from owners on 20 February. A week later Menu started its own tests on 40–50 dogs and cats. Seven animals died. (All this according to FDA’s Sundlof.)