How are all non-live vaccines administered?

Non-live vaccines are typically administered intramuscularly. This method involves injecting the vaccine deep into the muscle tissue, which allows for quick absorption into the bloodstream, ensuring an effective immune response. Intramuscular administration is commonly used for various vaccines, including inactivated, subunit, and toxoid vaccines, as the muscle tissue has a good blood supply and can facilitate an efficient immune response.

While some non-live vaccines may also be given subcutaneously or intradermally, intramuscular injection is the most prevalent method used, particularly for childhood immunizations and adult vaccines like the flu shot.