Generate a list of three diseases that are preventable through vaccinations.
1. Measles 
2. Polio 
3. Hepatitis B
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Generate a list of three diseases that are preventable through vaccinations.

### Response:
1. Measles 
2. Polio 
3. Hepatitis B