Question

Which of the following is a causative organism for Syphilis:

• A. \( \text{Vibrio cholerae} \)
• B. \( \text{Treponema pallidum} \)
• C. \( \text{Bacillus pertussis} \)
• D. \( \text{Clostridium tetani} \)

Hint:

Syphilis progresses through several stages: primary, secondary, latent, and tertiary. Early diagnosis and treatment with antibiotics like penicillin are critical to preventing severe complications.

Answer 1

The Correct Option is B

These four organisms cause four very different kinds of infections, spread through four different routes, and matching syphilis to its transmission route narrows the answer quickly.

1. Vibrio cholerae: Spreads through contaminated water and food, causing the profuse diarrhea of cholera, nothing like a sexually transmitted infection.
2. Treponema pallidum: A spiral-shaped spirochete bacterium spread through direct sexual contact or from mother to child during pregnancy, which is exactly the transmission pattern and disease identity of syphilis.
3. Bacillus pertussis: Spreads through airborne respiratory droplets, causing whooping cough in the lungs and airways, an entirely different infection site from syphilis.
4. Clostridium tetani: Enters through wounds in the skin, releasing a neurotoxin that causes tetanus, again nothing to do with sexual transmission or syphilis.

Since syphilis is specifically a sexually transmitted spirochete infection, only Treponema pallidum, the organism with that exact transmission route and structure, fits. The correct answer is Treponema pallidum.