There are two types of flu vaccines: conventional shots and nasal spray flu vaccines, which are also called nasal mists.
Conventional flu shots are usually inactivated vaccines, meaning there’s no live virus in it. Nasal spray flu vaccines (FluMist) are live attenuated vaccines, which means they have a small amount of active virus that is weakened. Neither can give you the flu, despite the common myths about flu vaccines, and both provide greater immunity to influenza.