The purpose of this clinical trial is to determine whether there is any effect on the
antibiotic, ciprofloxacin when taken before and after administration of a 3-dose series of
BioThrax® (Anthrax Vaccine Adsorbed or AVA).
This study will be conducted in the United States (US) in 154 healthy male and female
volunteer subjects ages 18 to 45.
The duration of study participation for each subject will be approximately 76 days
(approximately 2.5 months)