NPR reporting that anthrax has been found in the Capitol ventilation system. The letter was probably more for psychological effect, something along the lines of "Congratulations. You have just been murdered." (Any Avengers fans remember that episode?)
Anthrax_Scare_List
Go here:
and then click the Anthrax_Scare_List topic to initiate the search! !
Daschhle and his staffers clearly made the situation worse and panicked a lot of people. Now they are saying it is not weapons grade at all!