On PBS yesterday some bioterror experts were going on about it. I barely caught part of a reference to an incident where a well funded terrorist organization hired well qualified scientists to instigate an anthrax epidemic, but the product they released was anthrax vaccine, to no effect.

All that said, though, the purpose is largely achieved by instilling fear that an infectious agent may be anywhere, so they don't really need to be very successful in their kill rates to be successful in the mission.

Apparently nobody wants to buy the National Inquirer this week.