Which of the following STD and its causative agent is not correctly matched ?

Options

A. Gential warts : Haemophilus ducrei
B. Syphilis : Treponema pallidum
C. Genital herpes : Type II Herpes simplex virus (HSV-2)
D. Trichomoniasis : Trichomonas vaginalis

Answer

To solve the question regarding which STD and its causative agent are not correctly matched, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Understanding STDs**:
- STDs (Sexually Transmitted Diseases) are infections that are primarily spread through sexual contact.

2. **Analyzing Each Option**:
- **Option 1: Trichomoniasis**
- Causative Agent: Trichomonas vaginalis
- This is correctly matched. Trichomoniasis is indeed caused by the protozoan Trichomonas vaginalis.

- **Option 2: Genital Herpes**
- Causative Agent: Type 2 Herpes Simplex Virus
- This is also correctly matched. Genital herpes is caused by the herpes simplex virus, specifically type 2.

- **Option 3: Syphilis**
- Causative Agent: Treponema pallidum
- This is correctly matched as well. Syphilis is caused by the bacterium Treponema pallidum.

- **Option 4: Genital Warts**
- Causative Agent: Human Papillomavirus (HPV)
- This is incorrectly matched in the context given. The question states that genital warts are caused by Haemophilus ducreyi, which is incorrect. Genital warts are actually caused by the Human Papillomavirus (HPV).

3. **Conclusion**:
- The option that is not correctly matched is regarding genital warts. Therefore, the answer is that genital warts are incorrectly matched with Haemophilus ducreyi.

### Final Answer:
The STD and its causative agent that is not correctly matched is **Genital Warts** with **Haemophilus ducreyi**.

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