Which of the following pairs correctly matches a disease and a pathogen causing it ?

Options

A. Typhoid - Salmonella typhi
B. Pneumonia - Haemophilus pneumoniae
C. Malaria - Ascaris lumbricoides
D. Ringworm - Entamoeba histolytica

Explanation

To determine which of the following pairs correctly matches a disease with the pathogen causing it, we will analyze each option provided.

### Step-by-Step Solution:

1. **Option 1: Typhoid and Salmonella typhi**
- Typhoid is indeed caused by the bacterium Salmonella typhi.
- **Conclusion:** This option is correct.

2. **Option 2: Pneumonia and Hemophilus pneumonia**
- Pneumonia can be caused by various pathogens, but the primary bacterium responsible for many cases is Streptococcus pneumoniae, not Hemophilus pneumonia.
- **Conclusion:** This option is incorrect.

3. **Option 3: Malaria and Asterislymperesis**
- Malaria is caused by the protozoan Plasmodium malariae, not by Asterislymperesis, which is a nematode.
- **Conclusion:** This option is incorrect.

4. **Option 4: Ringworm and Antimibahistolica**
- Ringworm is a fungal infection caused by dermatophytes, primarily Trichophyton species. Antimibahistolica is an amoeba and not related to ringworm.
- **Conclusion:** This option is incorrect.

### Final Answer:
The only correct pair is **Option 1: Typhoid is caused by Salmonella typhi**.

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