Jason Schwartz at Penn pointed us to Welch’s web site, where there is a Newspeak advertisement for, well, read it yourself:
While we are aware of recent research on resveratrol and the inhibition of influenza viruses, no research has studied the effects of drinking Welchs 100% Grape Juice made from Concord grapes on the avian flu. Because of this limited information, we cannot recommend the use of our product in this area. We do know, however, that Welchs 100% Grape Juice is abundant in a number of natural antioxidant compounds, of which resveratrol is just one, that may contribute to good health in many ways. Decisions on how to manage conditions like the avian flu should be made in consultation with a physician.