The anthrax bacillus can enter the body in which of the following ways?

The anthrax bacillus can enter the body in which of the following ways?

• A. Inhalation only
• B. Inhalation, wound contamination, ingestion
• C. Ingestion only
• D. Direct contact with skin

Answer: (B)

The key idea is that Bacillus anthracis can enter the body through multiple routes, not just one. Spores can be inhaled into the lungs (inhalational anthrax), penetrate through breaks in the skin (cutaneous anthrax), or be ingested with contaminated food or material (gastrointestinal anthrax). Because the question asks for all the ways the bacillus can enter, the best choice includes inhalation, wound contamination, and ingestion. The other options are too limited: inhalation alone misses skin and ingestion; ingestion alone misses inhalation and skin; direct contact with skin is only a risk if there is a break in the skin and still doesn’t cover ingestion or inhalation.

The key idea is that Bacillus anthracis can enter the body through multiple routes, not just one. Spores can be inhaled into the lungs (inhalational anthrax), penetrate through breaks in the skin (cutaneous anthrax), or be ingested with contaminated food or material (gastrointestinal anthrax). Because the question asks for all the ways the bacillus can enter, the best choice includes inhalation, wound contamination, and ingestion. The other options are too limited: inhalation alone misses skin and ingestion; ingestion alone misses inhalation and skin; direct contact with skin is only a risk if there is a break in the skin and still doesn’t cover ingestion or inhalation.