En undersøgelse med rhesusaber, der blev eksponeret for inhaleret anthrax, viste at 8/ 9 af dyrene overlevede forsøget, når disse var behandlet med ciprofloxacin 2 gange dagligt i en periode på 30 dage fra 1. dag efter exponeringen.
A study on Rhesus-monkeys that were exposed to anthrax by inhalation revealed that 8/ 9 animals survived the experiment when these animals were treated from 1 day after anthrax exposure with ciprofloxacin twice daily for a period of 30 days.