Vector - Agent - Environment - The agent for salmonella bacteria is the bacteria. The agent for salmonella bacteria is the white ibis. The environment for salmonella bacteria are urban parks. The host for salmonella bacteria are humans. The environment for salmonella bacteria are nature preserves. The vector for salmonella bacteria is the bacteria. The host for salmonella bacteria is city water and soil. The vector for salmonella bacteria is the white ibis.
