Emerging Infectious Disease ISSN: 1080-6059
Volume 5, Number 4—August 1999
THEME ISSUE
Bioterrorism
Historical Review
Historical Trends Related to Bioterrorism: An Empirical Analysis
Figure 4

Figure 4. Distribution of motivations for chemical and biological terrorism incidents, 1960—Jan. 31, 1999 (147 cases).
New Flu Virus in Pigs Exhibited at Fairs in Ohio
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