Task: Question Generation
Input (English): You receive a vaccination through an injection or a nasal spray. The vaccine contains a weakened version of the virus or bacteria responsible for the disease. The body's immune system reacts to the virus or bacteria. The immune system creates antibodies to fight the virus or bacteria. The antibodies remain in the body. The antibodies are ready to fight the disease if the person is infected with the disease. 
Output (English): How do vaccinations work?