Great, so after looking it up, I find the categorical exemption in 29 CFR 1904(b)(2)(viii), which basically says that the cold and flu are exempt from being claimed as a work related illness. However, more severe illnesses, such as TB, Brucellosis and the Plague would be. Gimme a stinking break!!!
Basically, it says we're screwed, and just live with it. BTW, their general categorization of flu would tend to include any Bird flu as well, so you won't be able to claim time loss if someone comes to work with the bird flu and you catch it.
Welcome to the human condition.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)