Anthrax throughout the ages - courtesy of CNN

1500 B.C - Fifth Egyptian plague, affecting livestock, and the sixth, known as the plague of boils, are symptomatic of anthrax.

1600's - "Black Bane", thought to be anthrax, kills 60,000 cattle in Europe.

1876 - Robert Koch confirms bacterial origin of anthrax.

1880 - First successful immunization of livestock against anthrax.

1915 - German agents in the United States believed to have injected horses, mules, and cattle with anthrax on their way to Europe during World War I.

1937 - Japan starts biological warfare program in Manchuria, including tests involving anthrax.

1942 - United Kingdom experiments with anthrax at Gruinard Island off the coast of Scotland. It was only recently decontaminated.

1943 - United States begins developing anthrax weapons.

1945 - Anthrax outbreak in Iran kill 1 million sheep.

1950's and 60's - U. S. biological warfare program continues after World War II at Fort Detrick, Maryland.

1969 - President Richard Nixon ends United States offensive biological weapons program. Defensive work continues.

1970 - Anthrax vaccine approved by the U. S. Food and Drug Administration.

1972 - International convention outlaws development or stockpiling of biological weapons.

1978-80 - Human anthrax epidemic strikes Zimbabwe, infecting more than 6,000 and killing as many as 100.

1979 - Aerolized anthrax spores released accidentally at a Soviet Union military facility, killing about 68 people.

1991 - U.S. troops vaccinated for anthrax in preparation for the Gulf War.

1990-93 - Terrorist group, Aum Shinrikyo, releases anthrax in Tokyo but no one is injured.

1995 - Iraq admits it produced 8,500 liters of concentrated anthrax as part of its biological wepaons program.

1998 - U. S. Secretary of Defense, William Cohen approves anthrax vaccination plan for all military service members.

2001 - Still in the making