The shot is actually a dead version of the flu. By injecting it into your body, your body is able to create the necessary antibodies that attack the actual virus.
The flu shot is an innovative invention in that it allows your body to be exposed to a non-infectious strain of the virus and causes your body to develop the antibodies essential to combat the flu.
Since this version of the flu is inactive, it has been shown to be safe in those who are immunosuppressed, including those who are undergoing cancer treatment and individuals who are HIV positive.
