There are 3 different types of flu vaccine available today. There are 2 different types of injectable vaccine and also a nasal spray vaccine. Most healthy individuals between the ages of 2 years and 49 years may opt for the nasal spray if they prefer not to receive an injection. The nasal spray version is not recommended for individuals who have chronic health issues.
There is also a “high-dose or high- powered” injectable version available which is recommended for adults over the age of 65. This vaccine is comprised of 3 types of flu strains in the formulation (known as trivalent).