The investigation centers on finding the scientist behind the attack, leading to a collaboration with military doctors and the transfer of patients to Walter Reed.
Dr. Kimura explains that the anthrax spores are weaponized and refined into a "respiratory ideal" that attacks deep within the lungs, making them odor-free and invisible. [S4E24] Amplification
Because this strain is highly sophisticated and lethal, the team faces the grim possibility of losing all infected patients, with the team taking Cipro just in case it is effective. The investigation centers on finding the scientist behind