As national concern over the number of reported anthrax cases grew, investigators searched for answers. From New York and New Jersey to Washington, D.C. to Florida, officials wanted to know the origin of "suspicious letters" that tested positive for anthrax. From coast to coast Americans wondered, 'Could it happen to me?'
 
BACKGROUND
Anthrax: At a glance
10 things you should know
History of anthrax
Making anthrax into a weapon
Explainer: Anthrax, biological weapons
Cipro: Fact vs. Fiction


TRACKING ANTHRAX
Anthrax cases: U.S. | World
Tracking anthrax
Scouring a biological crime scene
Following the trail at the Capitol
Detecting and destroying anthrax
Letters containing anthrax bear similarities


SAFETY TIPS
Tips for handling mail