What is the causative organism for Syphilis?

AIIMS Raipur NO - 2019 (Shift-1)

Applied Microbiology & Infection control

Easy

Appeared in: AIIMS Raipur NO - 2019 (Shift-1)

Explanation

Syphilis is a well-known sexually transmitted infection (STI) caused by the bacterium Treponema pallidum.
This organism is a spirochete, characterized by its slender, spiral or corkscrew shape, which can be visualized using dark-field microscopy.
The infection is systemic and progresses through distinct clinical stages (primary, secondary, latent, and tertiary) if not treated.
Transmission occurs primarily through direct contact with an infectious syphilitic lesion (chancre or rash).

Option B: Chlamydia trachomatis is a bacterium, but it causes a different STI called chlamydia, which can manifest as urethritis, cervicitis, or lymphogranuloma venereum (LGV).
Option C: Cytomegalovirus (CMV) is a member of the herpesvirus family. While it can be transmitted sexually, it causes CMV infection, not syphilis. CMV infection is typically asymptomatic in healthy individuals but can cause severe disease in newborns and immunocompromised patients.
Option D: Human Papillomavirus (HPV) is a virus responsible for causing genital warts and is the primary etiologic agent for cervical cancer and other anogenital cancers.

Clinical Relevance

Nursing practice connection: Knowing Causative agents of sexually transmitted infections (STIs) helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Accurate identification of the causative agent is critical for diagnosis and treatment. Syphilis is highly responsive to penicillin, whereas viral agents like HPV and CMV or other bacteria like Chlamydia require different treatments.
Syphilis is a nationally notifiable disease. Correct diagnosis is essential for public health surveillance, partner notification, and contact tracing to prevent further spread within the community.
Nurses play a key role in patient education regarding STIs, including modes of transmission, the importance of completing treatment, and safe sex practices to prevent reinfection and transmission.

How to Approach the Question

This is a factual recall question that tests your knowledge of microbiology and infectious diseases.
First, identify the key terms in the question: 'causative organism' and 'Syphilis'.
Access your knowledge base about common sexually transmitted infections and their specific pathogens.
Evaluate each option. Treponema pallidum is the classic spirochete bacterium known to cause syphilis.
Systematically rule out the other options by associating them with the diseases they cause: Chlamydia trachomatis (Chlamydia), Cytomegalovirus (CMV infection), and Human Papillomavirus (genital warts, cancer).
Confirm that Treponema pallidum is the only correct match for syphilis.

Concept Tested & Keywords

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