What if someone just dumped a pound of spores on the ground? Would they blow away in a fatal cloud?
Highly doubtful. The Journal of the American Medical Association cited Army tests conducted with soldiers exercising heavily — noses to the ground — on dirt infected by 2 million spores per square meter. The tests concluded that the soldiers might breathe a lethal dose. The simulation was meant to determine how safe runways and roads might be after an anthrax attack. But soldiers under those attack conditions would have been immunized and would be wearing gas masks. Again, the conclusion is: Those concentrations of spores would not exist naturally. You need aerosol delivery to infect large numbers of people.
