| bioterrorism alleging use of anthrax and interim guidelines for management--united states, 1998. | from october 30 through december 23, 1998, cdc received reports of a series of bioterroristic threats of anthrax exposure. letters alleged to contain anthrax were sent to health clinics on october 30, 1998, in indiana, kentucky, and tennessee. during december 17-23 in california, a letter alleged to contain anthrax was sent to a private business, and three telephone threats of anthrax contamination of ventilation systems were made to private and public buildings. all threats were hoaxes and are ... | 1999 | 10023627 |