Name two diseases which are caused by bacteria present in sewage.

Explanation

**Step-by-Step Solution:**

1. **Understanding Sewage:**
- Sewage is wastewater that is generated from various sources such as homes, industries, and agricultural fields. It contains a mixture of organic and inorganic substances, including harmful bacteria.

2. **Identifying Bacteria in Sewage:**
- Sewage often contains various types of bacteria, some of which can cause diseases in humans.

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