Roundworm infection produces

Options

A. vague symptoms of nausea ,abnominal pain and caugh
B. clear symptoms of abnominal pain and abdominal obstruction
C. anaemia and weakness even in light infection
D. pneumonia and peritonitis in all cases.

Answer

**Step-by-Step Solution:**

1. **Understanding Roundworm Infection**: Roundworm infections are caused by parasitic worms, specifically Ascaris lumbricoides, which are commonly found in contaminated soil.

2. **Transmission**: The eggs of the roundworm are ingested through contaminated food or water. Once ingested, they hatch in the intestines and can cause various symptoms.

3. **Identifying Symptoms**: The symptoms of roundworm infection can vary but often include:
- Nausea
- Abdominal pain
- Cough (in some cases, due to the migration of larvae through the lungs)

4. **Evaluating Options**:
- **Option A**: Vague symptoms of nausea, abdominal pain, and cough. This aligns with the known symptoms of roundworm infection.
- **Option B**: Clear symptoms of abdominal pain and abdominal obstruction. While abdominal pain is a symptom, abdominal obstruction is not a typical presentation for all cases.
- **Option C**: Anemia and weakness even in light infection. Anemia is not a direct symptom of roundworm infection.
- **Option D**: Pneumonia and pericarditis in all cases. These are not symptoms associated with roundworm infections.

5. **Conclusion**: Based on the analysis, the correct answer is **Option A**: vague symptoms of nausea, abdominal pain, and cough.