Which one of the following correctly matches a sexually tansmitted disease (STD) with its pathogen?

Options

A. AIDS-Bacillus anthracis
B. Urethritis-Entamoeba gingivalis
C. Syphilis-Treponema pallidum
D. Gonorrhoea-Leishmania donovani

Answer

To solve the question "Which one of the following correctly matches a sexually transmitted disease (STD) with its pathogen?", we will analyze each option provided:

1. **AIDS and Bacillus anthracis**:
- AIDS (Acquired Immunodeficiency Syndrome) is caused by the Human Immunodeficiency Virus (HIV), not by Bacillus anthracis. Bacillus anthracis is the bacterium that causes anthrax, which is not an STD.
- **Conclusion**: Incorrect match.

2. **Urethritis and Entamoeba gingivalis**:
- Urethritis is the inflammation of the urethra, typically caused by bacterial infections, most commonly by Neisseria gonorrhoeae (which causes gonorrhea). Entamoeba gingivalis is a protozoan that causes oral infections, not urethritis.
- **Conclusion**: Incorrect match.

3. **Syphilis and Trypanoma pallidum**:
- Syphilis is indeed a sexually transmitted disease caused by the bacterium Treponema pallidum. This is a correct match.
- **Conclusion**: Correct match.

4. **Gonorrhea and Leishmania donovani**:
- Gonorrhea is caused by Neisseria gonorrhoeae, a bacterium. Leishmania donovani is a protozoan that causes leishmaniasis, not gonorrhea.
- **Conclusion**: Incorrect match.

After analyzing all the options, the only correct match is:

**Correct Answer: Syphilis and Trypanoma pallidum.**