It is well established that increasing age is associated with a decreased capacity of the immune system
to mediate effective immune responses to vaccination and invading pathogens .
It is well established that increasing age is associated with a decreased capacity of the immune system to mediate effective immune responses to vaccination and invading pathogens .
It is well established that increasing age is associated with a decreased capacity of the immune system to mediate effective immune responses to vaccination and invading pathogens .