The phrase "anthrax attacks" refers to a series of deliberate incidents where the deadly bacteria known as anthrax were sent through the mail in order to harm or kill people. Full definition
Since the US anthrax attacks of 2001 there has been no bioterrorism anywhere in the world. (newscientist.com)
Last fall's anthrax attacks in the United States showed that current schemes for detecting the deadly bacterium carry an unwelcome trade - off: They're either fast but prone to mistakes, or highly accurate but slow (Science, 9 November 2001, p. 1266). (sciencemag.org)
The argument over the US anthrax attacks of 2001 looks set to continue, as politicians begin asking tough questions about the investigation. (newscientist.com)