Antibiotics can be effective anthrax-killers in an infected person, especially if someone contracts cutaneous anthrax and gets prompt treatment.

CNN: Ten things you need to know about anthrax

On September 25, the woman had contact with a letter or package with a white powdery substance and began experiencing symptoms of cutaneous anthrax three days later.

CNN: Cutaneous anthrax most common, most survived

The employee at NBC who contracted anthrax has cutaneous anthrax.

CNN: Ten things you need to know about anthrax

Cutaneous, or an anthrax skin infection, is the most common and least severe form of the disease.

CNN: Cutaneous anthrax most common, most survived

Seven other people contracted cutaneous (skin) anthrax.

CNN: Fumigation largely succeeding in clearing anthrax

Anthrax infections take three forms: cutaneous, inhalation and intestinal.

CNN: Cutaneous anthrax most common, most survived

Anthrax infection can occur in three forms: cutaneous (skin), inhalation, and gastrointestinal.

CNN: Ten things you need to know about anthrax