4 definitions of HPR. Definition of HPR in Business & Finance. What does HPR stand for?
According to the Centers for Disease Control (CDC), you should allow two weeks after getting a flu shot to develop protection against the flu. That's because after vaccination, the body has to work for a while to create the protective antibodies to the flu virus. Bear in mind, though, that there's a lot of variation in how fast different people's immune systems work.
It can vary person to person depending on the health of their immune systems. 1  For trivalent seasonal flu vaccine (including those containing the H1N1/09 swine flu vaccine), it usually is under two weeks from the time of the injection for adults to develop full immunity. For the A-H1N1/09 Swine Flu monovalent vaccine, immunity in otherwise healthy adult individuals averages 8 to 10 days after the vaccination.