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Volume 8, Number 10—October 2002
THEME ISSUE
Bioterrorism-related Anthrax

Anthrax Perspectives

Epidemiologic Responses to Anthrax Outbreaks: A Review of Field Investigations, 1950–2001

Michael E. Bales*, Andrew L. Dannenberg*Comments to Author , Philip S. Brachman†, Arnold F. Kaufmann*, Peter C. Klatsky*‡, and David A. Ashford*
Author affiliations: *Centers for Disease Control and Prevention, Atlanta, Georgia, USA; †Emory University Rollins School of Public Health, Atlanta, Georgia, USA; ‡Mt. Sinai School of Medicine, New York, New York;

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Table 1

CDC field investigations of suspected anthrax in humans and animals and reported cases of anthrax in humans, United States, 1950–2001a

Years Field investigations
No. of cases of anthrax in humans reported nationallyc
No. of investigationsb No. of human cases
Cutaneous Inhalational Total
1950–54 2 1 0 1 223
1955–59 11 16 6 22 131
1960–64 4 5 1 6 54
1965–69 7 5 1 6 21
1970–74 8 4 0 4 13
1975–79 6 5 1 6 10
1980–84 0 0 0 0 2
1985–89 1 1 0 1 3
1990–94 1 0 0 0 1
1995–99 2 0 0 0 0
2000–01d 2 2 0 2 Not available
Total 44 39 9 48 458

aCDC, Centers for Disease Control and Prevention.
bExcludes three investigations of suspected anthrax conducted outside the United States (1967, 1986, 1998) and two investigations focused on decontamination of Bacillus anthracis–contaminated textile mills (1967, 1972).
cSources: CDC. MMWR Summary of Notifiable Diseases, United States, 1994 (10); and MMWR Summary of Notifiable Diseases, United States, 1999 (11).
dBefore October 2001 bioterrorism-related anthrax cases.

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