No, anthrax is not 100% lethal. While it is a very serious and potentially deadly disease, most cases of anthrax can be treated with antibiotics if caught early enough. The fatality rate of anthrax depends on the strain of the bacteria, the way it enters the body, and the overall health of the person infected. Without treatment, the mortality rate can be as high as 80%, but with early diagnosis and appropriate antibiotic treatment, fatality rates are much lower, ranging from 0-20%.
Inhalation anthrax is the most serious form of the disease, and is usually fatal if not treated quickly. The mortality rate of inhalation anthrax is estimated at over 80%. However, if antibiotics are administered within 24 hours of the onset of symptoms, the mortality rate drops to around 20%.
Gastrointestinal anthrax is the least serious form of the disease and is usually treatable with antibiotics. The mortality rate of gastrointestinal anthrax is estimated to be between 0-25%, depending on the severity of the infection and the amount of time it takes to diagnose and treat the infection.
Cutaneous anthrax is usually the least serious form of the disease, and is usually treatable with antibiotics. The mortality rate of cutaneous anthrax is estimated to be between 0-5%, depending on the severity of the infection and the amount of time it takes to diagnose and treat the infection.
Overall, anthrax is a serious and potentially deadly disease, but it is not 100% lethal. With early diagnosis and appropriate antibiotic treatment, the mortality rate for most cases of anthrax can be significantly reduced, and many infected individuals can make a full recovery.