Give two examples : Protozoan diseases

Explanation

### Step-by-Step Solution

1. **Understanding Protozoan Diseases**: Protozoan diseases are illnesses caused by protozoans, which are unicellular organisms classified under the kingdom Protista.

2. **Example 1: Malaria**:
- **Causative Agent**: The disease is caused by the protozoan of the genus *Plasmodium*.
- **Transmission**: The disease is transmitted to humans through the bite of infected female *Anopheles* mosquitoes.
- **Symptoms**: Common symptoms include chills, fever, and anemia due to the destruction of red blood cells (RBCs). Symptoms typically occur every three to four days.
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